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Home  ›  Which Of The Following Is Not An M16a3/m4a1 Service Rifle Weapon Condition Code?

Which Of The Following Is Not An M16a3/m4a1 Service Rifle Weapon Condition Code?

Written By Tuesday, March 29, 2022 Add Comment Edit
Carbine, Quotient v.56 mm, M4
File:PEO M4 Carbine RAS M68 CCO.jpg
Colt M4 Modular Weapon Organisation Carbine with RAS, M68 CCO and a GPS-02 grip pod
Type Selective-fire carbine
Attack rifle
Place of origin The states
Service history
In service 1994–nowadays
Used by See Users below
Wars See Conflicts beneath
Product history
Designed 1982–1993
Manufacturer See Manufacturers below
Unit cost $700 (avg. toll)[1]
Produced 1991–nowadays
Variants M4A1
Mark 18 Mod 0 CQBR
Specifications
Weight vi.63 lb (3.01 kg) empty
7.75 lb (3.52 kg) with thirty rounds
Length 33 in (838 mm) (stock extended)
29.75 in (756 mm) (stock retracted)
Barrel length 14.v in (368 mm)
Cartridge 5.56×45mm NATO 25-45 Sharps 25-45 only if you lot manage to fit it in a mag. 7.62x51mm NATO
Caliber v.56 mm (.223 in)
Activeness Gas-operated, rotating commodities, Stoner expanding gas
Rate of burn down 700–950 round/min cyclic[two]
Muzzle velocity ii,970 ft/s (910 thou/s) (M855A1 round)[3]

2,887 ft/s (880 grand/s) (M855 circular)
2,986 ft/southward (910 m/south) (M193 round)

Effective range 500 m (550 yd)[four]
Feed system 30-round box mag or other STANAG magazines.[lower-blastoff 1]
Sights Iron sights ACOG

The M4 Carbine is a five.56×45mm NATO, air-cooled, gas-operated,[lower-alpha 2] directly impingement, mag-fed, select fire carbine. It has a 14.5 in (370 mm) butt and a telescoping stock. It is substantially a lighter and shorter variant of the M16A2 assault rifle.

The M4 is extensively used by the U.s. Military machine and is largely replacing the M16 burglarize in United States Army and United States Marine Corps (USMC) combat units every bit the primary infantry weapon[6] [7] and service rifle. The M203 and M320 grenade launchers can be mounted on the lower hand guard of the carbine (see where bipod is fastened on the photograph). The distinctive step in its barrel is for mounting the M203 with the standard hardware. The M4 has semi-automatic and 3-round burst firing modes (similar the M16A2 and M16A4), while the M4A1 has semi-automatic and fully automatic firing modes (like the M16A1 and M16A3).

Contents

  • 1 History
    • one.1 Improved M4
  • 2 Design
    • 2.1 Accessories
      • 2.1.1 Special Operations Peculiar Modification
  • iii Variants
    • 3.ane M4 MWS (Modular Weapon System)
    • three.two M4A1
    • 3.three Mk 18 CQBR
    • 3.4 Enhanced M4
    • 3.5 Armwest LLC M4
  • 4 Performance
    • 4.one Early feedback
    • 4.2 2006 CNA report
    • 4.3 2007 dust examination
    • four.4 Reliability
    • 4.5 Gas piston
  • v Manufacturers
  • 6 Trademark issues
  • vii Users
    • vii.1 U.South. noncombatant buying
  • viii Conflicts
    • eight.i 1990s
    • 8.two 2000s
    • 8.3 2010s
  • 9 See too
    • ix.1 Replacement attempts
  • ten References
    • 10.1 Notes
    • 10.two Citations
  • eleven External links

History

Following the adoption of the M16 rifle, carbine variants were also adopted for close quarters operations. The Motorcar-fifteen family of weapons served through the Vietnam State of war. However, these rifles had design issues, as the barrel length was halved to 10 inches (25 cm), which upset the ballistics, reducing its range and accuracy and leading to considerable muzzle flash and blast, then that a large wink suppressor had to be fitted.[8] "Even so, as a short-range weapon information technology is quite acceptable and thus, [despite] its caliber, [the XM177 'Commando'] is classed every bit a submachine gun."[eight] In 1982, the U.Southward. Government requested Filly to make a carbine version of the M16A2, at the time, the Colt M16A2 was the Colt 645, also known as the M16A1E1. Later on the same twelvemonth, the U.Due south. Regular army Ammunition Munitions Chemical Command helped Colt develop a new variant of the XM177E2, and the U.S. Army redesignated the XM177E2 to the XM4 Carbine, given the name as the successor to the M3 Carbine. The offset model of the XM4 is the XM177E2, and it even has the older flash hider that was used in the Vietnam War. The difference is that the weapon fires M855 cartridge instead of the .223 Remington rounds. In 1983, the ninth Infantry Partitioning requested a Quick Reaction Program (QRP) for a five.56mm carbine as early as Apr 1983. The XM4 was tested past the Army's Armament Research and Development Center (ARDC) in June 1983. After, the gun was updated with improved furniture, and a 1-7" barrel. The ARDC recommended additional commonality with the M16A2 rifle, also as lengthening the barrel to xiv.5". In January 1984, the U.Southward. Regular army revised the QRP, and a month later on, the Ground forces formally approved the revised QRP. By November 1983, the Colt M16A2 (Colt 701) was adopted by the U.S. military machine.

The 2d model was tested in May 1985 by the U.S. Army and the USMC. The models had the XM177E2 receiver with a new A2 pistol grip and were given a shorter eleven.5-inch (290 mm) barrel, and longer fourteen.5-inch (370 mm) barrel for the bayonet and the M203 grenade launcher. The USMC preferred the 14.v-inch barrel. Colt also created the "XM4 IPR document" for the USMC and the U.S. Regular army. The third model was made every bit early equally May 1986, and it was tested from May 1986 through May 1987; at the time it had an A2 upper sight, and information technology had the M16A2'southward 1:7 rifling, to use the heavier 62-grain M855 rounds. The extended barrel improved the XM4'due south ballistics, reduced muzzle nail, and gave the XM4 the power to mount a bayonet and the M203 grenade launcher. The XM4 was likewise given the cartridge deflector, as well every bit other minor refinements.[ commendation needed ] Colt was also focusing on other carbines, such every bit the Colt 723 and Filly 727 (M16A2). In May 1991, the XM4 was renamed to the M4, and Filly made a manual for the M4. In 1993, the U.Due south. Navy SEALs tests the M4 in Somalia along with the new M4A1. Colt stopped working on improving the other Colt Carbines to practice more work on the M4.

The M4 was officially accustomed into service by the U.Southward. military in 1994, to replace the older XM177s, Colt carbines, M16A2 rifle, and the M3 grease gun. It beginning saw action in the hands of U.S. troops deployed to Kosovo in 1999 in back up of the NATO-led KFOR peacekeeping force. It would afterward be used heavily by U.S. forces during the Global State of war on Terrorism, including Operation Indelible Freedom and Operation Iraqi Freedom. In the U.Due south. Army, the M4 had largely replaced M16A2s every bit the principal weapon of forrard deployed personnel by 2005.[9] The M4 carbine likewise replaced most submachine guns and selected handguns in U.Due south. military machine service,[nine] equally information technology fires more effective rifle armament that offers superior stopping power and is better able to penetrate mod torso armor.[ citation needed ]

A U.S. Army 82nd Airborne soldier holds an M4 carbine in Vitina, Kosovo in January 2000 during the NATO-led KFOR mission, the first operational apply of the M4 by U.S. troops.

In 2007, the USMC ordered its officers (up to the rank of Lieutenant Colonel) and staff non-commissioned officers to carry the M4 carbine instead of the M9 handgun.[10] This is in keeping with the Marine Corps doctrine, "Every Marine a rifleman." The Marine Corps, however, chose the full-sized M16A4 over the M4 as its standard infantry rifle. United states of america Navy corpsmen E5 and beneath are besides issued M4s instead of the M9.[11] While ordinary riflemen in the Marine Corps were armed with M16A4s, M4s were fielded by troops in positions where a full-length burglarize would be too beefy, including vehicle operators, fireteam and squad leaders. As of 2013, the U.Due south. Marine Corps had 80,000 M4 carbines in their inventory.[12] [xiii]

By July 2015, major Marine Corps commands were endorsing switching to the M4 over the M16A4 as the standard infantry rifle, but as the Ground forces had done. This is because of the carbine's lighter weight, compact length, and ability to accost modern combat situations that happen mostly inside close quarters; if a squad needs to engage at longer ranges, the M27 IAR can be used equally a designated marksman rifle. Approving of the modify would motion the M16 to back up personnel, while armories already had the 17,000 M4s in the inventory needed to outfit all infantrymen who needed one.[14] In Oct 2015, Commandant Robert Neller formally approved of making the M4 carbine the primary weapon for all infantry battalions, security forces, and supporting schools in the USMC. The switch was to completed past September 2016.[15] In December 2017, the Marine Corps revealed a determination to equip every Marine in an infantry squad with the M27, replacing the M4 in that function of the service.[16] MARSOC will retain the M4, as its shorter barrel is more suited to how they operate in confined spaces.[17]

Improved M4

In 2009, the U.S. Army took consummate ownership of the M4 design.[18] This allowed companies other than Colt to compete with their own M4 designs. The Regular army planned on fielding the terminal of its M4 requirement in 2010.[18] In Oct 2009, Army weapons officials proposed a series of changes to the M4 to Congress. Requested changes included an electronic round counter that records the number of shots fired, a heavier barrel, and maybe replacing the Stoner expanding gas system with a gas piston system.

The benefits of these changes, however, have come nether scrutiny from both the military and civilian firearms community.[19] [xx] According to a PDF detailing the M4 Carbine comeback plans released past PEO Soldier, the directly impingement system would be replaced only after reviews were done comparing the direct impingement organization to commercial gas piston operating system to find out and use the best available operating organization in the U.S. Ground forces's improved M4A1.[21]

In September 2010, the Army announced information technology would buy 12,000 M4A1s from Filly Firearms by the finish of 2010, and would social club 25,000 more M4A1s by early 2011. The service branch planned to buy 12,000 M4A1 conversion kits in early 2011. In tardily 2011, the Army bought 65,000 more conversion kits. From in that location the Ground forces had to decide if information technology would upgrade all of its M4s.[22] In April 2012, the U.S. Army announced to begin purchasing over 120,000 M4A1 carbines to start reequipping front end line units from the original M4 to the new M4A1 version. The first 24,000 were to be made past Remington Arms Company. Remington was to produce the M4A1s from mid-2013 to mid-2014.[23] Afterward completion of that contract, it was to be between Colt and Remington to produce over 100,000 more M4A1s for the U.S. Army. Because of efforts from Colt to sue the Ground forces to force them non to use Remington to produce M4s, the Regular army reworked the original solicitation for new M4A1s to avoid legal problems from Colt.[24] On 16 Nov 2012, Filly'southward protest of Remington receiving the M4A1 production contract was dismissed.[25] Instead of the contract beingness re-awarded to Remington, the Ground forces awarded the contract for 120,000 M4A1 carbines worth $77 million to FN Herstal on 22 Feb 2013.[26] [27] The order is expected to exist completed by 2018.[28]

Design

M4 with M68 Close Combat Optic and AN/PAQ-four

The M4 and its variants fire five.56×45mm NATO (and .223 Remington) ammunition, and are gas-operated, magazine-fed, selective burn down firearms with either a multi-position telescoping stock or a fixed A2 or LE tactical stock.[29] The M4 is a shorter and lighter variant of the M16A2 rifle, with eighty% parts commonality.[nine] The M4 is like to much earlier compact M16 versions, such as the 1960s-era XM177 family. Some of those visual similarities are obvious in both weapons. As with many carbines, the M4 is handy and more than convenient to carry than a full-length rifle, having a shortened 14.v in (370 mm) barrel, which includes the shorter carbine gas system. The drawback is slightly inferior ballistic performance compared to the total-size M16, with its v.5" (14 cm) longer butt. This becomes well-nigh credible at ranges of 200 yards (180 thou) and beyond. At that place accept been some criticisms of the carbine, such as lower muzzle velocities and louder study because of the shorter barrel, additional stress on parts considering of the shorter gas organisation, and a tendency to overheat faster than the M16A2. M4 feedramps are extended from the barrel extension into the upper receiver. This can help convalesce feeding problems that may occur equally a result of the increased pressure level of the shortened gas system of the M4. This problem is primarily seen in fully automatic applications.

M4 with the newer, redesigned telescoping stock

While the M4'due south maneuverability makes it a candidate for non-infantry troops (vehicle crews, clerks and staff officers), information technology also makes information technology ideal for close quarters boxing. The M4, along with the M16A4, has by and large replaced the M16A2 in the Army and Marines. The U.S. Air Force, for example, has transitioned completely to the M4 for Security Forces squadrons, while other armed personnel retain the M16A2. The U.S. Navy uses M4A1s for Special Operations and vehicle crews.

Accessories

An M4A1 merely after firing, with an ejected case in mid-air; the M203 and M68 CCO are attached.

Similar all the variants of the M16, the M4 and the M4A1 can exist fitted with many accessories, such equally night vision devices, flash suppressors, laser sights, telescopic sights, bipods, either the M203 or M320 grenade launcher, the M26 MASS shotgun, forward paw grips, a detachable rail-mounted carrying handle, and annihilation else compatible with a MIL-STD-1913 picatinny track.

Other common accessories include the AN/PEQ-2, AN/PEQ-fifteen multi-mode light amplification by stimulated emission of radiation, AN/PEQ-16 Mini Integrated Pointing Illumination Module (MIPIM), M68 CCO, Trijicon TA01 and TA31 Advanced Combat Optical Gunsights (ACOG), EOTech 550 series holographic sights, and Aimpoint M68 Close Combat Optic. Visible and infrared lights of various manufacturers are commonly attached using diverse mounting methods. Every bit with all versions of the M16, the M4 accepts a blank-firing attachment (BFA) for grooming purposes.

As for magazines, the M4 and the M4A1 tin have 30-round box magazine or other STANAG magazines. Other types of magazines with different capacities such as the 100 rounds Beta C-Mag is besides bachelor. In Jan 2017, a USMC unit deployed with suppressors mounted to every infantry M4 service weapon. Exercises showed that having all weapons suppressed improved squad communication and surprise during engagements; disadvantages included boosted heat and weight, increased maintenance, and the greater cost of equipping so many troops with the zipper.[thirty] In July 2020, the Marine Corps announced it would be ordering suppressors for use past all M4 carbines used past close gainsay units.[31] The Marines began to rollout suppressors for all M4/M4A1 carbines in infantry, reconnaissance and special operations units in December 2020.[32]

Special Operations Peculiar Modification

SOPMOD (Special Operations Peculiar Modification) Block I

U.S. Special Operations Command (USSOCOM) adult the Special Operations Peculiar Modification (SOPMOD) Cake I kit for the carbines used by units operating under its control. The kit features an M4A1, a Rail Interface Organization (RIS) handguard adult past Knight'due south Armament Visitor (KAC), a shortened quick-detachable M203 grenade launcher and foliage sight, a KAC audio suppressor, a KAC back-up rear sight, an Insight Technologies AN/PEQ-2A visible laser/infrared designator, along with Trijicon's ACOG TA-01NSN model and Reflex sights, and a night vision sight. This kit was designed to be configurable (modular) for diverse missions, and the kit is currently in service with special operations units.

M4A1 SOPMOD Block II in Afghanistan, 2012

A 2nd-generation SOPMOD kit (known every bit SOPMOD II) includes innovative optics, such as the Elcan Specter DR, Trijicon's ACOG TA01 ECOS model, and the EOTech 553. Block Two uses the RIS Two rails manufactured by Daniel Defense in both a 9.5 and 12.5-inch length.

Variants

Variants of the carbine built by different manufacturers are as well in service with many other foreign special forces units, such as the Australian Special Air Service Regiment (SASR). While the SASR uses weapons of substantially the same pattern built by Colt for export (Colt uses different models to separate weapons for the U.S. military and those for commercial/export purposes), the British Special Air Service uses a variant on the basic theme, the Colt Canada C8SFW.

M4 MWS (Modular Weapon System)

M4 MWS (Modular Weapon Organization) shown with diverse accessories including M203 grenade launcher, RIS foregrip, removable conduct handle/rear sight assembly, AN/PAQ-4 laser system, M68 CCO reflex sight, and the AN/PVS-4 dark vision optics

Colt Model 925 carbines were tested and fitted with the KAC M4 RAS under the designation M4E2, but this designation appears to have been scrapped in favor of mounting this arrangement to existing carbines without changing the designation. The U.S. Army Field Manual specifies for the Ground forces that adding the Rail Adapter Organization (RAS) turns the weapon into the M4 MWS or modular weapon system.

M4A1

M4A1 with TA01NSN ACOG four×32 optical sight

The M4A1 carbine is a fully automatic variant of the basic M4 carbine intended for special operations use. The M4A1 was introduced in May 1991 and was in service in 1994. The M4A1 was the first M4 model with the removable carry handle. The M4A1 has a "S-1-F" (safe/semi-automated/fully automatic) trigger group, while the M4 has a "S-1-iii" (safety/semi-automatic/three-circular outburst) trigger group. The M4A1 is used past almost all U.S special operation units including, only non limited to, Marine Force Recon, Army Rangers, Regular army Special Forces, Navy SEALs, Air Forcefulness Pararescue and Air Forcefulness Combat Command Teams. It has a maximum constructive range of 500 to 600 meters (550–660 yd).[4] The fully automated trigger gives a more consequent trigger pull, which leads to better accurateness.[33] According to Marker A. Westrom, owner of ArmaLite, Inc., automatic fire is better for immigration rooms than burst fire.[34]

In the last few years, M4A1 carbines have been refitted or received straight from the factory with barrels with a thicker profile under the handguard. This is for a variety of reasons such as heat dissipation during full-auto, and accuracy as a byproduct of barrel weight. These heavier barrel weapons are also fitted with a heavier buffer known as the H2. Out of three sliding weights inside the buffer, the H2 possesses two tungsten weights and ane steel weight, versus the standard H buffer, which uses one tungsten weight and two steel weights. These weapons, known past Colt as the Model 921HB (for Heavy Barrel), have besides been designated M4A1, and every bit far every bit the government is concerned the M4A1 represents both the 921 and 921HB.

Conversion of M4s to the M4A1 began in 2014, the kickoff of all U.Southward. Ground forces forces existence equipped with the automatic variant.[35] Though in service with special forces, combat in Afghanistan showed the need for providing automatic suppression fires during fire and movement for regular soldiers. The 101st Airborne Partition began fielding newly-built M4A1s in 2012, and the U.S. 1st Infantry Division became the first unit to convert their M4s to M4A1-standard in May 2014. Upgrades included a heavier barrel to ameliorate dissipate heat from sustained automatic firing, which also helps the rifles use the M855A1 EPR that has college proof pressures and puts more strain on barrels. The total-automobile trigger group has a more consistent trigger pull, whereas the burst grouping's pull varies on where the burn command group is set, resulting in more predictable and better accuracy on semi-automated fire. Some other addition is an ambidextrous selector lever for easier use with left-handed shooters. The M4-M4A1 conversion increases weapon weight from 7.46 lb (three.38 kg) to vii.74 lb (3.51 kg), counting a dorsum-up fe sight, forward pistol grip, empty magazine, and sling. Each carbine upgrade costs $240 per rifle, for a total cost of $120 million for half a million conversions. Three hundred conversions tin can be done per mean solar day to equip a brigade gainsay squad per week, with all M4A1 conversions to be completed by 2019.[36] [37]

Mk 18 CQBR

An M4A1 with a Close Quarter Battle Receiver. The barrel length is 10.three inches.

The Mk 18 Close Quarters Boxing Receiver is a variant of M4A1 with a 10.three-inch barrel upper receiver.[38] Electric current contractors for the Mk eighteen are Colt and Lewis Machine & Tool (LMT) NSN 1005-01-527-2288.

Enhanced M4

For the Individual Carbine competition, Colt submitted their Enhanced M4 design, as well known equally the Colt Advanced Piston Carbine (APC). The weapon has a suppression-ready fluted butt, which is lighter and cools better than previous M4 barrels. It is claimed to accept "markedly better" accuracy. To better reliability, Colt used an articulating link piston (ALP), which "reduces the inherent stress in the piston stroke by allowing for deflection and thermal expansion".[39] In traditional gas piston operating systems, the force of the piston hitting the commodities carrier can push the bolt carrier down and into the wall of the buffer tube, leading to accelerated wear and fifty-fifty chipped metal. This is known every bit carrier tilt. The ALP allows the operating rod to wiggle to right for the downward pressure on the bolt and transfers the forcefulness direct backwards in line with the bore and buffer assembly, eliminating the carrier tilt. This relieves stress on parts and helps to increase accuracy.[40] The Individual Carbine competition was canceled earlier a winning weapon was chosen.[33]

Armwest LLC M4

In 2014, American firearms designer Jim Sullivan provided a video interview regarding his contributions to the M16/M4 family of rifles while working for Armalite. A noted critic of the M4, he illustrates the deficiencies found in the rifle in its current configuration. In the video, he demonstrates his "Arm Due west LLC modified M4", with enhancements he believes necessary to rectify the bug with the weapon. Proprietary issues bated, the weapon is said to borrow features in his prior development, the Ultimax. Sullivan has stated (without exact details as to how) the weapon can burn down from the closed bolt in semi-automated and switch to open bolt when firing in fully automated, improving accuracy. The weight of the cyclic components of the gun has been doubled (while retaining the weapon's weight at less than viii pounds). Compared to the standard M4, which in automated fires 750-950 rounds a minute, the rate of fire of the Arm W M4 is heavily reduced both to save armament and reduce barrel wearable. The reduced rate as well renders the weapon more controllable and accurate in automatic firing.[41]

Functioning

A U.South. Navy sailor fires an M4 carbine from the warship USSVella Gulf.

The M4 carbine has been used for close quarters operations where the M16 would be too long and bulky to apply effectively. It has been a compact, light, customizable, and accurate weapon. This has come up at the cost of reliability and maintainability. Similar other firearms, failure to properly maintain the M4 can upshot in malfunctions. This became apparent as it saw continued use in the sandy environments of Iraq and Afghanistan.[42] Despite this, in post-combat surveys, 94% of soldiers rated the M4 every bit an constructive weapons organisation.[43]

Early feedback

By late 2002, 89% of U.Due south. troops reported they were confident with the M4, but they had a range of issues. 34% of users said the handguards rattled and became excessively hot when firing, and 15% had trouble zeroing the M68 Close Combat Optic. 35% added barber brushes and 24% added dental picks to their cleaning kits. At that place were many malfunctions, including twenty% of users experiencing a double feed, fifteen% experiencing feeding jams, and 13% saying that feeding problems were caused by magazines. 20% of users were dissatisfied with weapon maintenance. Some had trouble locking the mag into the weapon and having to chamber a round in order to lock the mag. Soldiers likewise asked for a larger round to be able to impale targets with one shot. New optics and handguards made usage of the M4 easier, and good weapon maintenance reduced the number of misfeeds.[44]

2006 CNA written report

In December 2006, the Centre for Naval Analyses (CNA) released a report on U.S. small artillery in combat. The CNA conducted surveys on ii,608 troops returning from combat in Iraq and Afghanistan over the by 12 months. Only troops who fired their weapons at enemy targets were allowed to participate. 917 troops were armed with M4 Carbines, making up 35% of the survey. 89% of M4 users reported they were satisfied with the weapon. 90% were satisfied with handling qualities such equally handguards, size, and weight. M4 users had the highest levels of satisfaction with weapon performance, including 94% with accuracy, 92% with range, and 93% with rate of fire. Only 19% of M4 users reported a stoppage, and 82% of those that experienced a stoppage said it had footling touch on their ability to articulate the stoppage and re-engage their target. 53% of the M4 users never experienced failures of their magazines to feed. 81% did non demand their rifles repaired while in theater. 80% were confident in the M4'due south reliability, defined as level of soldier conviction their weapon will fire without malfunction, and 83% were confident in its durability, defined as the level of soldier confidence their weapon will not break or demand repair. Both factors were attributed to high levels of soldiers performing their own maintenance. 54% of M4 users offered recommendations for improvements. 20% of requests was for greater bullet lethality, and 10% was for amend quality magazines, besides as other minor recommendations. Some M16 users expressed their desire to be issued the M4.[45] Some issues have been addressed with the issuing of the improved STANAG magazine in March 2009,[46] [47] and the M855A1 Enhanced Operation Round in June 2010.[48]

2007 grit examination

In the fall 2007, the Army tested the M4 against three other carbines in "sandstorm conditions" at Aberdeen Proving Ground, Maryland: the Heckler & Koch XM8, Fabrique Nationale de Herstal SOF Gainsay Assault Rifle (SCAR) and the Heckler & Koch HK416. Ten of each type of rifle were used to burn 6,000 rounds each, for a full of 60,000 rounds per burglarize type.[49] The M4 suffered far more stoppages than its competitors: 882 stoppages, 19 requiring an armorer to set. The XM8 had the fewest stoppages, 116 small-scale stoppages and 11 major ones, followed past the FN SCAR with 226 stoppages and the HK416 with 233.[50] [51]

Despite 863 modest stoppages—termed "class one" stoppages, which require 10 seconds or less to clear, or "class two" stoppages, which require more than than ten seconds to articulate—the M4 functioned well, with over 98% of the 60,000 total rounds firing without a problem. The Regular army said information technology planned to ameliorate the M4 with a new common cold-hammer-forged barrel to give longer life and more reliable magazines to reduce the stoppages. Mag failures caused 239 of the M4's failures. Army officials said the new magazines could be combat-gear up by spring if testing went well.[52] The Army began issuing an improved STANAG mag in March 2009.[46] [47]

According to the Ground forces, the M4 but suffered 296 stoppages and said that the high number reported could be attributed to discrepancies in the scoring process. The Army testing command stated that, if the number of stoppages caused by a broken part met some threshold, they would be eliminated from the final study pending redesign of the part. Colt also claimed that the testing conditions were unfair to the M4, equally the M4s used in the test were normal guns from active inventory, with remaining service life varying randomly. Farther, the trial M4s had flare-up-fashion fire groups, which are more complicated and decumbent to failure than the fully automated fire groups the other manufacturers presented for testing.[53]

In that location were three extreme dust tests performed in 2007. The second exam results showed a large divergence from the final test with the M4 having 148 grade one stoppages caused by rifle malfunctions and 148 form 1 stoppages acquired by magazine stoppages. The full-size M16 rifle had 61 stoppages during the same farthermost dust test.[54]

Reliability

In early 2010, ii journalists from the New York Times spent three months with soldiers and Marines in Transitional islamic state of afghanistan. While in that location, they questioned around 100 infantrymen most the reliability of their M4 carbines, likewise as the M16 burglarize. Troops did not report reliability issues with their rifles. While only 100 troops were asked, they fought at least a dozen intense engagements in Helmand Province, where the ground is covered in fine powdered sand (called "moon dust" by troops) that can stick to firearms. Weapons were frequently dusty, wet, and covered in mud. Intense firefights lasted hours with several magazines existence expended. Only one soldier reported a jam when his M16 was covered in mud subsequently climbing out of a culvert. The weapon was cleared and resumed firing with the next chambered round. Furthermore, a Marine chief warrant officer reported that there were no bug with his battalion's 700 M4s and 350 M16s.[55]

The reliability of the M4 has increased as the design was upgraded. In 1990, the M4 was required to fire 600 mean rounds between stoppages using M855 ammunition. In 2013, the electric current M4A1 version tin can fire i,691 mean rounds between stoppages using M855A1 ammunition.[56] During the 2009 Marine Corps Infantry Automated Rifle testing, the Colt IAR displayed a MRBS of Class I/II Stoppages of 952 rounds, with a MRBEFF of Class Iii Stoppages of 60,000 rounds.[57]

Gas piston

An array of firearms accessory makers have offered gas piston conversion kits for the M4. The claimed benefits include less needed lubrication for the bolt carrier grouping to run reliably and reduced fouling. The argument against information technology is increased weight and reduced accuracy.[58] The Enhanced M4 uses an articulating link piston operating system. Complicating the Ground forces search for higher reliability in the M4 is a number of observations of M4 gas piston alternatives that suffer unintended pattern problems. The kickoff is that many of the gas piston modifications for the M4 isolate the piston and then that piston jams or related malfunction crave the entire weapon be disassembled, such disassembly cannot be performed by the terminate-user and requires a qualified armorer to perform out of field, whereas nigh any malfunction with the direct-impingement system tin can be stock-still by the end-user in field. The second is that gas piston alternatives use an off-centrality operation of the piston that tin introduce carrier tilt, whereby the bolt carrier fails to enter the buffer tube at a direct angle, resulting in part wearing. This can as well tilt the bolt during extraction, leading to increased bolt lug failures. The third is that the utilize of a sound suppressor results in hot gases entering the chamber, regardless of a directly-gas impingement or gas piston design choice. The gas piston system may besides cause the firearm to get proprietary to the manufacturer, making modifications and changes with parts from other manufacturers difficult.[20] [59]

Manufacturers

  • Filly's Manufacturing Company, The states
  • Colt Canada in Ontario, Canada
  • Norinco, China[60]
  • Lewis Car and Tool Company in Milan, Illinois, US[61]
  • Bushmaster Firearms International, U.s.[ citation needed ]
  • U.Due south. Ordnance, US[ commendation needed ]
  • Remington Arms Company, US[62]
  • Daniel Defence in Black Creek, Georgia, United states of america[63]
  • Forjas Taurus São Leopoldo, RS, Brazil[64]
  • FN Herstal, Belgium[65]
  • SME Ordnance, Malaysia[66]
  • Sarsilmaz, Turkey[67]

Trademark issues

The M4 was developed and produced for the United states government by Colt Firearms, which had an exclusive contract to produce the M4 family of weapons through 2011.[68] However, a number of other manufacturers offering M4-like firearms. Colt previously held a U.South. trademark on the term "M4".[69] Many manufacturers have production firearms that are substantially identical to a military M4, but with a 16-inch (41 cm) barrel. The Bushmaster M4 Type Carbine is a popular case. Noncombatant models are sometimes colloquially referred to as "M4gery" ( / / EM -for- JƏR -ee , a portmanteau of "M4" and "forgery"). Colt had maintained that it retains sole rights to the M4 name and pattern. Other manufacturers had long maintained that Filly had been overstating its rights, and that "M4" had now get a generic term for a shortened AR-fifteen. In Apr 2004, Colt filed a lawsuit against Heckler & Koch and Bushmaster Firearms, claiming acts of trademark infringement, trade dress infringement, trademark dilution, faux designation of origin, false advertising, patent infringement, unfair contest, and deceptive trade practices. Heckler & Koch later settled out of courtroom, changing one product's proper noun from "HK M4" to "HK416". Nonetheless, on Dec 8, 2005, a district court judge in Maine granted a summary judgment in favor of Bushmaster Firearms, dismissing all of Colt's claims except for false advertizement. On the latter claim, Colt could not recover monetary damages. The court likewise ruled that "M4" was now a generic proper noun and that Filly's trademark should be revoked.[70]

Users

  • Transitional islamic state of afghanistan: Used by Afghan Army commandos.[71] [72] M4s sold equally part of a 2006 Foreign Military Sales packet.[73] Additional M4s sold every bit a 2008 Foreign Military machine Sales bundle.[74]
  • Albania: Used by Albanian State Forcefulness 2015.[75]
  • Algeria: Used by the Algerian Special Forces.[ citation needed ]
  • Antigua and Barbuda: M4/M4A1s appear to be sold via FMS program in 2017.[76]
  • Argentine republic: Used by Argentine Ground forces, Argentine Navy and Argentine National Gendarmerie[76]
  • Australia: M4A1 (designated M4A5), used by Special Operations Control, Clearance Defined, and Police Tactical Groups.[77]
  • Azerbaijan: M4 Carbine used by the special war machine units and Land Border Service (DSX).[78]
  • Bahrain: M4A1s sold equally a 2008 Foreign Military Sales package.[74] More M4/M4A1s appear to be sold via FMS programme in 2017.[76]
  • Belize: M4s/M4A1s sold as part of a 2006 Foreign War machine Sales package.[73] More M4/M4A1s announced to exist sold via FMS program in 2017.[76]
  • Republic of bolivia: M4A1s used by the Bolivian Army.[79]
  • Bosnia & Herzegovina: M4A1s used by the armed forces and air baby-sit units.[74]
  • Brazil: Used by Civil Police, Armed forces Police of Espirito Santo State, Military Police of Rio de Janeiro State,[80] the Brazilian Federal Police and Special Forces of the Brazilian Army, Brazilian Navy,[81] and Brazilian Marine Corps.[ citation needed ]
  • Croatia: User since 2003, several hundred purchased for Croatian ISF contingent equally well as Special Forces.[82]
  • Czech Republic: Bushmaster M4A3 B.M.A.S. is used by (601st Special forces group, Armed forces police, 43rd Airborne mechanized battalion) of Czech Ground forces.[83]
  • Cathay: A variant is made by Norinco as the Norinco CQ. CQ-A carbine variant used past the Sichuan Police Department, Chongqing SWAT teams, and the Snow Leopard Commando Unit.[84]
  • Colombia: M4A1s as part of a 2008 Strange Military Sales.[74] More than M4/M4A1s announced to be sold via FMS programme in 2017.[76]
  • Dominican Republic[85]
  • Ecuador: M4s sold as a 2008 Foreign Military Sales package.[74]
  • Egypt[86]
  • El Salvador: M4s sold as office of a 2007 Foreign Military Sales bundle.[87] Boosted M4s sold every bit a 2008 Foreign Military Sales package.[74]
  • France: used by French Special Force 1st Marine Infantry Parachute Regiment[88]
  • Georgia: Bushmaster M4s beingness replaced past Colt M4s for the military. More M4/M4A1s appear to exist sold via FMS program in 2017.[76] [89]
  • Ghana[xc]
  • Greece: Used past EKAM, All SF Ground forces, Navy, Airforce units.[91]
  • Hungary: M4A1 SOPMOD by Hungarian MH 34th Bercsényi László special operation battalion[92] More than M4/M4A1s announced to be sold via FMS plan in 2017.[76]
  • Republic of india: M4A1s as part of a 2008 Foreign Armed services Sales.[74] M4A1 is used by the Mizoram Armed Constabulary, PARA COMMANDOS, MARCOS, Garud and Forcefulness One of the Mumbai Police.[93] [94]
  • Indonesia: Used by Detachment 88 Counter-terrorism Police Squad operators.[95] Also used by Komando Pasukan Katak (Kopaska) tactical diver group and Komando Pasukan Khusus (Kopassus) special forces group.[96]
  • Iraq: Used past the Iraqi Army.[97] Chief weapon of the Iraqi National Counter-Terrorism Force.[98] More M4/M4A1s announced to be sold via FMS program in 2017.[76]
  • Israel: Sold equally part of a January 2001 Foreign Armed forces Sales package to Israel.[99]
  • Italy: Special Forces[100]
  • Jamaica: M4s sold equally office of a 2007 Foreign Military Sales bundle.[87]
  • Nippon: M4A1s equally role of a 2008 Foreign Military Sales package.[74] M4A1 SOPMOD rifles are in utilize by the Japanese Special Forces Group.[101]
  • Jordan: M4s sold every bit role of a 2007 Strange Military Sales package.[87] Additional M4s sold as a 2008 Strange Military machine Sales package.[74] More than M4/M4A1s announced to be sold via FMS programme in 2017.[76]
  • Kenya: Used by Kenyan troops Kenya Defence Forces in AMISCOM ops.[ninety]
  • Kuwait[102]
  • Lebanon: M4 components being sold to Lebanese special forces.[103] M4/M4A1s sold as a 2008 Foreign Military Sales packet.[74] More M4/M4A1s announced to be sold via FMS program in 2017.[76]
  • Liberia: Used by Liberian Emergency Response Unit.[ commendation needed ]
  • Malaysia: Made under license by SME Ordnance Sdn Bhd.[66] Used by military and police special forces,[104]
  • Nepal: 1,070 M4s,[105] sold as function of a 2005 Foreign Military machine Sales packet.[67]
  • New Zealand: Used by NZSAS operators and standard issue to New Zealand Police including Special Tactics Group and Armed Offenders Squad units.[106] [107] [108]
  • North Republic of macedonia: M4s sold equally a 2008 Foreign Military Sales packet.[74]
  • Sultanate of oman: M4/M4A1s announced to be sold via FMS plan in 2017.[76]
  • Islamic republic of pakistan: M4A1 variant used by the Special Forces of the Pakistani military besides the POF G3P4 standard rifle for the Pakistani war machine— also used by the Special Security Unit of measurement (SSU) of the Sindh Police.[109] [110] More than M4/M4A1s appear to exist sold via FMS programme in 2017.[76]
  • Palestinian Authorization: Used by Palestinian security forces.[111] [ amend source needed ]
  • Panama: M4A1s sold as a 2008 Foreign Military machine Sales parcel.[74] More M4/M4A1s announced to be sold via FMS program in 2017.[76]
  • Philippines: Colt M4/M4A1s sold as a 2008 Foreign War machine Sales package.[74] New orders for 63,000 R4A3 rifles from Remington Arms for the Philippine Army and the Philippine Marine Corps.[112] [113] Several units also used past the Defense Intelligence and Security Group.[114]
  • Poland: Used past Wojska Specjalne military machine unit JW Grom.[116]
  • Portugal: Used by Marines special forces DAE (Destacamento de Acções Especiais).[117]
  • Romania: M4/M4A1s appear to exist sold via FMS program in 2017.[76]
  • Russian federation: Used in limited quantities past FSB Alpha.[118]
  • Senegal: M4/M4A1s announced to be sold via FMS program in 2017.[76] two,200 M4s sold through FMS programme in 2019.[119]
  • Serbia: Used past various police units.[120]
  • Singapore: Used by the Singapore Armed Forces Commando Formation and the Police Coast Guard (but the Port Squadron and the Littoral Patrol Squadron) of the Singapore Constabulary Strength.[121]
  • Slovakia: M4/M4A1s announced to exist sold via FMS program in 2017.[76]
  • South Korea: Used by the South korea Army.[122]
  • Taiwan: Used by Republic of Prc Army and National Constabulary Agency[123]
  • Thailand: M4A1s sold as part of a 2006 Foreign Military Sales packet.[73]
  • Tonga: M4/M4A1s sold as a 2008 Foreign Military Sales package.[74]
  • Tunisia: Used past the Tunisian Ground forces's Special Forces Grouping (GFS), 51st Infantry Navy Commandos Regiment, Presidential Baby-sit and diverse National Baby-sit and Police force special forces units.[124] Used by the Unité Spéciale – Garde Nationale.[125]
  • Turkey: Produced nether license past Sarsılmaz Firearms.[67] The M4A1 rifle is used by Turkish Military machine[126]
  • Uganda: Used by Ugandan troops in AMISCOM ops.[90]
  • United Arab Emirates: Purchased ii,500 M4 carbines in 1993.[127]
  • Us[128]
  • Uruguay: Colt M4 and Bushmaster M4 carbines for Special Operation Group (Metropolitan Police)[128]
  • Yemen: M4s sold as part of a 2006 Foreign Military Sales package.[73]
  • ISIS: Still being captured by ISIS forces in the syrian civil war and many more onoing wars in the area

U.S. noncombatant ownership

Question book-new.svg

This commodity does not contain any citations or references. Please meliorate this commodity by adding a reference. For information well-nigh how to add references, see Template:Citation.

Sales of select-fire or fully automatic M4s by Colt are restricted to war machine and law enforcement agencies. No private citizen tin own an M4 in a select-fire or fully automatic configuration, as this model of fully automatic rifle was developed after the 1986 ban on fully automatic weapons available to exist purchased by United states of america citizens under the Firearms Owners' Protection Deed. While many machine guns can exist legally owned with a proper taxation postage from the Agency of Booze, Tobacco, Firearms and Explosives, an amendment to the act barred the transfer to private citizens of car guns made or registered in the U.S. after May xix, 1986. The simply exception was for Special Occupational Taxpayers (SOT), who are licensed machine gun dealers with demonstration letters, manufacturers, and those dealing in exports and imports. As such, simply the primeval Filly M4 prototypes built prior to 1986 would be legal to own past non-SOT civilians.[ citation needed ] The modular nature of the AR-xv design, however, makes it relatively simple to fit M4-specific components to a "pre-'86" select-fire AR-fifteen lower receiver, producing an "M4" in all but name.

The M4 falls nether restrictions of Title II of the National Firearms Act. The xiv.five-inch barrel makes the M4 a Brusk Barrel Rifle (SBR), and select fire capability (semi-automated and fully automated or burst-automatic) makes the M4 a machine gun. Civilian replicas of the M4 typically accept 16-inch barrels (or standard xiv.5-inch M4 barrels with permanently fastened wink suppressors with a total length of xvi inches) and are semi-automated-only to meet the legal definition of a rifle under the Gun Control Act. Civilian-legal M4s are also popular with police force as a patrol carbine.[129]

Conflicts

1990s

  • Colombian conflict (1964–nowadays)[ citation needed ]
  • Civil conflict in the Philippines (1969–present)
  • Kosovo War (1998–1999), offset US armed services usage of the M4 carbine.

2000s

  • War in Afghanistan (2001–2021)
  • Iraq War (2003–2011)
  • Lebanon War (2006)[ citation needed ]
  • Mexican Drug War (2006–nowadays) [ citation needed ]
  • Russo-Georgian War (2008)[130]
  • Gaza War (2008–2009)

2010s

  • Syrian Ceremonious State of war (2011–nowadays)[131]
  • Lahad Datu collision (2013)[132]
  • Iraqi Civil War (2014–2017)[131]
  • Boxing of Arsal (2014)
  • Battle of Marawi (2017)[133]

See also

  • Comparison of the AK-47 and M16
  • SIG Sauer SIG516, an M16-based burglarize
  • Bushmaster XM-fifteen
  • LWRC M6, a competing M4-based weapon
  • Brown Enhanced Automated Burglarize, a competing M16/M4-based weapon
  • LVOA-C, an M4 variant
  • Remington R4, a competing M4-based weapon

Replacement attempts

  • XM8 rifle: canceled in 2005
  • Close Quarters Battle Receiver: successful replacement
  • Private Carbine: canceled in 2013. Candidates included:
    • Barrett REC7 PDW
    • Beretta ARX 160
    • Remington ACR
    • FN SCAR
    • Heckler & Koch HK416
    • LWRC M6A4
    • Robinson Arms XCR
    • SIG 556
    • Colt ACC-Thou

References

Notes

  1. ↑ Magazines with different capacities also bachelor.
  2. ↑ Stoner expanding gas system per patent.[five]

Citations

  1. ↑ Curtis, Rob (2012-04-20). "U.S. Army places lodge for 24,000 M4A1 carbines with Remington". Military machine Times. http://militarytimes.com/blogs/gearscout/2012/04/20/u.s.-army-places-gild-for-24000-m4-carbines-with-remington/.
  2. ↑ "Colt M4 Carbine Technical Specifications". http://www.filly.com/Catalog/Military/Products/ColtM4Carbine.aspx#lt-100845-technical-specifications.
  3. ↑ "M855A1 Enhanced Performance Circular (EPR), LTC Philip Clark, Product Manager Small Caliber Armament, Apr 2012". https://acc.dau.mil/adl/en-US/382846/file/68848/Public%20Release%20EPR%20Apr12.pdf.
  4. ↑ 4.0 four.1 "Thousand-4 Carbine". U.S. Army Fact Files. U.s. Ground forces. http://world wide web.army.mil/factfiles/equipment/private/m4.html.
  5. ↑ "US2951424A: Gas operated bolt and carrier system". September 6, 1960. https://patents.google.com/patent/US2951424A/en.
  6. ↑ "Small Arms–Individual Weapons". three November 2010. https://fas.org/human being/dod-101/sys/country/wsh2011/290.pdf.
  7. ↑ "Commandant approves M4 as standard weapon for Marine infantry". http://www.marinecorpstimes.com/story/military/tech/2015/11/01/marine-grunts-react-switch-m16-m4/74849998/.
  8. ↑ viii.0 8.1 Armed services Small Artillery Of The 20th Century, 7th Edition, 2000 by Ian V. Hogg & John S. Weeks, p. 166
  9. ↑ 9.0 9.1 9.ii "The Design & Development of the Yard-4 Carbine". Special Operations.com. http://www.specialoperations.com/Weapons/Features/M4/Page_Two.htm.
  10. ↑ "Officers, staff NCOs to be issued M4s". Marine Corps Times. 25 June 2007. http://www.marinecorpstimes.com/article/20070625/NEWS/706250319/Officers-staff-NCOs-issued-M4s. Alt URL
  11. ↑ "New Assignment Rationale for Individual Weapons". U.South. Marine Corps. 22 June 2007. http://www2.marines.mil/news/letters/Pages/2007/Messagesfinal4.aspx.
  12. ↑ "M27 Offset Impressions". 20 Apr 2013. http://www.thefirearmblog.com/blog/2013/04/20/m27-impressions/.
  13. ↑ "Corps exploring rifle upgrades". Armed forces Times. 29 Apr 2013. http://www.militarytimes.com/article/20130429/NEWS04/304260036/Corps-exploring-rifle-upgrades.
  14. ↑ "Marine brass endorses infantry program to ditch M16 for M4". Military Times. 27 July 2015. http://www.militarytimes.com/story/armed forces/2015/07/27/marine-officials-endorse-infantry-programme--ditch-m16--m4/30145257/.
  15. ↑ "Commandant approves M4 as standard weapon for Marine infantry". Military Times. 26 Oct 2015. http://www.militarytimes.com/story/military/2015/ten/26/commandant-approves-m4-standard-burglarize-marine-corps-infantry/74593750/.
  16. ↑ "M27s and 'Head-to-Toe' Gear Overhaul on the Manner for Marine Grunts". Military.com. 5 Jan 2018. https://www.military.com/kitup/2018/01/05/m27s-and-head-toe-gear-overhaul-style-marine-grunts.html.
  17. ↑ "Marine Raiders don't want whatsoever M27s". Marine Corps Times. 19 February 2018. https://www.marinecorpstimes.com/news/your-marine-corps/2018/02/23/marine-raiders-dont-want-whatever-m27s/.
  18. ↑ 18.0 18.ane Cox, Matthew (2009-07-07). "Ground forces acquires rights to M4". Army Times . http://www.armytimes.com/news/2009/07/army_carbine_070609w/.
  19. ↑ Cox, Matthew (2009-11-21). "Major revamp possible for M4 carbine". Army Times . http://www.armytimes.com/news/2009/xi/army_M4_112109w/.
  20. ↑ twenty.0 20.ane Pannone, Mike (2010-03-19). "The Large M4 Myth: "Fouling caused by the direct impingement gas system makes the M4/M4A1 Carbine unreliable."". Defensive Review . http://world wide web.defensereview.com/the-big-m4-myth-fouling-caused-by-the-direct-impingement-gas-system-makes-the-m4-unreliable/.
  21. ↑ "Dual Path Strategy: M4 PIP". 7 September 2011. https://peosoldier.army.mil/FactSheets/PMSW/Dual_Path_Strategy_M4_PIP.pdf. [ dead link ]
  22. ↑ Lamothe, Dan. "Corps to pass on Regular army upgrades to M4". Marine Corps Times . http://marinecorpstimes.com/news/2010/09/marine-corps-passes-on-army-carbine-updates-091110w/.
  23. ↑ "Usa Army Places Club For 24000 M4 Carbines With Remington". http://militarytimes.com/blogs/gearscout/2012/04/20/us-army-places-club-for-24000-m4-carbines-with-remington/.
  24. ↑ "Colt once more blocks Army's avant-garde M4 plans". Military.com. xviii October 2012. http://www.military.com/daily-news/2012/ten/18/colt-once again-blocks-armys-advanced-m4-plans.html?ESRC=sm_todayinmil.nl.
  25. ↑ "GAO denies latest Colt M4 protest". Gearscout.com. Military Times. 28 November 2012. http://militarytimes.com/blogs/gearscout/2012/eleven/28/gao-denies-latest-colt-m4-protestation-could-this-be-it/.
  26. ↑ "Army Awards New M4/M4A1 Contract to FN". Military.com. 23 February 2013. http://kitup.military.com/2013/02/army-awards-m4m4a1-contract-fn.html#more than-23457.
  27. ↑ "FN Manufacturing Wins Contract to Supply M4A1". 24 February 2013. http://world wide web.thefirearmblog.com/blog/2013/02/24/fn-manufacturing-wins-contract-to-supply-m4a1/.
  28. ↑ "FN Manufacturing to deliver M4/M4A1 Carbines to US Ground forces". 27 February 2013. http://www.strategicdefenceintelligence.com/article/htrM7sZtjw/2013/02/27/fn_manufacturing_to_deliver_m4m4a1_carbines_to_us_army/.
  29. ↑ "Blitheness of the gas arrangement of the M4 carbine". Militarytimes.com. http://www.militarytimes.com/projects/flash/2007_02_20_carbine/.
  30. ↑ "Marine Unit in Norway Kickoff to Deploy with Rifle Suppressors". 11 May 2017. http://www.war machine.com/daily-news/2017/05/11/marine-unit-norway-showtime-deploy-rifle-suppressors.html.
  31. ↑ The Marine Corps Plans on Fielding Suppressors to Infantry Squads Starting this Year. Military.com. thirteen July 2020.
  32. ↑ Marine Corps to showtime widespread distribution of suppressors. Marine Corps Times. 31 December 2020.
  33. ↑ 33.0 33.1 "Ground forces Kills Competition to Replace M4". Military.com. 13 June 2013. http://www.military machine.com/daily-news/2013/06/13/army-kills-contest-to-replace-m4.html?ESRC=sm_todayinmil.nl.
  34. ↑ "Carbine Competition Fails to Find Comeback Over Current Weapon". National Defense Mag. Baronial 2013. http://www.nationaldefensemagazine.org/archive/2013/Baronial/Pages/CarbineCompetitionFailstoFindImprovementOverCurrentWeapon.aspx.
  35. ↑ "Improved carbines headed your mode". Army Times. 30 Apr 2011. http://www.armytimes.com/news/2011/04/ground forces-improved-carbines-heading-your-way-043011w/.
  36. ↑ "Beefier carbines en route to Soldiers". 22 May 2014. http://www.army.mil/commodity/126553/Beefier_carbines_en_route_to_Soldiers/.
  37. ↑ "Army infantry beginning adoption of upgraded M4A1 carbines". 24 May 2014. http://www.guns.com/2014/05/24/army-infantry-beginning-adoption-of-upgraded-m4a1-carbines/.
  38. ↑ Johnson, Jeff. "CQB Receiver – M4A1 Carbine with10-Inch Upper Receiver" (Power betoken presentation). US Naval Surface Warfare Center Crane. https://www.scribd.com/doc/52753307/CQBR.
  39. ↑ "Enhanced M4". 29 November 2011. http://www.defensereview.com/the-u-s-armys-side by side-carbine-hello-gas-pistonop-rod-enhanced-m4m4a1-carbine-type-ar-ar-15-goodbye-direct-gas-impingement-dgi-operation/.
  40. ↑ "Colt'southward Advanced Piston Carbine, the LE6940P In Stores". http://www.investorvillage.com/smbd.asp?mb=2033&mn=64037&pt=msg&mid=11628448.
  41. ↑ "Interview & Shooting: Jim Sullivan, AR-15 Designer". 26 November 2014. https://www.full30.com/video/9b50f8a825ab510b4c227c7b32a76bc1.
  42. ↑ "M4 Carbine Controversy". http://www.defenseindustrydaily.com/the-usas-m4-carbine-controversy-03289/.
  43. ↑ "Small Artillery-Individual Weapons". https://fas.org/man/dod-101/sys/land/wsh2012/294.pdf.
  44. ↑ "SA80: Mistake OR MALIGNED". http://www.quarry.nildram.co.great britain/SA80.htm.
  45. ↑ "Soldier Perspectives on Small Arms in Combat". Department of Defense. 2006. http://images.military.com/pix/defensetech/cna_m4_study_d0015259_a2.pdf.
  46. ↑ 46.0 46.1 "Brownells shipping M16 magazines with anti-tilt follower to war machine". 13 June 2009. http://www.thefirearmblog.com/blog/2009/06/13/brownells-shipping-m16-magazines-with-anti-tilt-follower-to-war machine/.
  47. ↑ 47.0 47.1 "New US Regular army M16 "Tan" Magazine". 16 December 2009. http://www.thefirearmblog.com/blog/2009/12/16/new-united states-army-m16-tan-mag/.
  48. ↑ "Army begins aircraft improved 5.56mm cartridge". 24 June 2010. http://www.pica.army.mil/PicatinnyPublic/highlights/archive/2010/06-24-10.asp.
  49. ↑ Lowe, Christian (2007-12-18). "M4 Carbine Fares Poorly in Dust Test". Military.com. Military Advantage. http://world wide web.military.com/NewsContent/0,13319,158468,00.html.
  50. ↑ "...And Here'south the Rest of the M4 Story". Defence Tech. Armed services Advantage. 2007-12-xviii. http://world wide web.defensetech.org/athenaeum/003909.html.
  51. ↑ Cox, Matthew (2007-12-nineteen). "Newer carbines outperform M4 in dust exam". Regular army Times. Army Times Publishing Company. http://www.armytimes.com/news/2007/12/army_carbine_dusttest_071217/.
  52. ↑ Cox, Matthew (2007-12-17). "M4 may go tougher barrel, better mags". Army Times. Army Times Publishing Visitor. http://www.armytimes.com/news/2007/12/army_m4_hearing_071217w/.
  53. ↑ "The Ground forces's M4 Carbine: Background and Issues for Congress". 8 June 2010. https://fas.org/sgp/crs/weapons/RS22888.pdf.
  54. ↑ Combat Tactics Fall 2008 Volume Vi Number Two "True Grit" past David Crane
  55. ↑ "Examining the Complaints About American Burglarize Reliability". The New York Times. seven July 2010. http://atwar.blogs.nytimes.com/2010/07/07/examining-the-complaints-nigh-american-rifle-reliability/?_r=0.
  56. ↑ "Army: Gun Makers Didn't Encounter Reliability Standard". Military.com. xiv June 2013. http://www.military.com/daily-news/2013/06/14/regular army-gun-makers-didnt-meet-reliability-standard.html?ESRC=sm_todayinmil.nl.
  57. ↑ "USMC IAR Reliability Testing Results". 2009. http://weaponsman.com/?p=40433.
  58. ↑ "Best AR-15 Piston Uppers & Conversion Kits [2019"]. October 14, 2017. https://www.pewpewtactical.com/best-ar-15-piston-uppers-conversion-kits/.
  59. ↑ "15259frcov.fm". http://images.military.com/pix/defensetech/cna_m4_study_d0015259_a2.pdf.
  60. ↑ Norinco CQ five'56mm Blazon A set on carbine [ expressionless link ] . Retrieved October seven, 2007.
  61. ↑ "SPM14". https://lmtdefense.com/product/spm14/.
  62. ↑ "R4 Consummate Organization". https://www.remingtondefense.com/carbines/r4/operator/86612.html.
  63. ↑ "Daniel Defense, Burglarize, Carbine, M4A1, SOCOM, 5.56". https://danieldefense.com/socom-m4a1.html.
  64. ↑ "Products: Law Enforcement". https://www.taurusexport.com/en/products/law-enforcement.
  65. ↑ "M4A1". https://fnamerica.com/products/rifles/fn-m4a1/.
  66. ↑ 66.0 66.1 "Malaysia has licence to make M4 assault rifles". The Star. 2007-11-05. http://www.thestar.com.my/news/story.asp?file=/2007/11/v/nation/19381084&sec=nation.
  67. ↑ 67.0 67.1 67.ii Watters, David. "The 5.56 X 45mm: 2005". http://world wide web.thegunzone.com/556dw-15.html.
  68. ↑ "FindLaw'south Usa Commencement Excursion instance and opinions.". https://caselaw.findlaw.com/united states of america-1st-circuit/1173327.html.
  69. ↑ US Trademark serial number 76335060 registration number 2734001
  70. ↑ "OpenJurist synopsis of deprival of Filly'southward appeal to 08 Dec 2005 ruling". Openjurist.org. http://openjurist.org/486/f3d/701/filly-defense-llc-5-bushmaster-firearms-inc.
  71. ↑ Petty Officer First Class David Votroubek (July–August 2008). "New Gear for Afghan Commandos". United States Ground forces Logistics Direction College. http://www.almc.army.mil/alog/bug/JulAug08/newgear_afghan.html.
  72. ↑ Soraya Sarhaddi Nelson (23 July 2007). "New Afghan Commandos Have to the Frontlines". National Public Radio. https://www.npr.org/templates/story/story.php?storyId=12127848.
  73. ↑ 73.0 73.1 73.2 73.iii Watters, Daniel. "The 5.56 Ten 45mm: 2006". http://world wide web.thegunzone.com/556dw-xvi.html.
  74. ↑ 74.00 74.01 74.02 74.03 74.04 74.05 74.06 74.07 74.08 74.09 74.10 74.xi 74.12 74.thirteen Watters, Daniel. "The 5.56 X 45mm: 2008". The Gun Zone. http://www.thegunzone.com/556dw-xviii.html.
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External links

  • Colt M4's Constabulary Enforcement page and Colt M4'due south Military folio
  • US Army M4 fact file
  • The AR-15/M16 Magazine FAQ
  • U.Southward. Army Won't Field Burglarize Deemed Superior to M4
  • Online Army Report Guide

Source: https://military-history.fandom.com/wiki/M4_carbine

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