what's an m4

What's An M4 - A magazine-style carbine made in the USA in the 1980s. Short version of the M16A2 assault rifle.

The M4 is widely used by the United States Army (since 2010) and combat units of the United States Marine Corps (USMC) (since 2016) with the decision to largely replace the M16 rifle as the primary infantry weapon. .

What's An M4

The M4 has undergone more than 90 modifications to improve the weapon's ergonomics and modularity. SOPMOD, accessory kit including optical attachment. Underbarrel M203 grade launcher.

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In April 2022, the US Army selected the SIG MCX SPEAR as the winner of the Next Generation Personnel Weapons Program to replace the M16/M4. The rifle is designated XM5.

However, these rifles had design problems. The barrel length was halved to 10 inches (25 cm), resulting in poor trajectory, reduced range and accuracy, and considerable muzzle flash and explosion.

In 1982, the US government commissioned Colt to develop a carbine version of the M16A2. It was the Colt 645, then known as the Colt M16A2, M16A1E1. Later that year, the US Army Ordnance Chemical Command helped Colt develop a new variation of the XM177E2, which the US Army redesignated the XM4 carbine and named as the successor to the M3 carbine. The carbine uses the same upper and lower receivers as the M16A1,

Fires the M855 cartridge along with the older M193 cartridge. In 1983, the 9th Infantry Division requested a 5.56mm carbine quick reaction program (QRP) to replace the in-service M1 carbine and M3 assault rifle.

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The XM4 was tested by the Army's Armament Research and Development Cter (ARDC) in June 1983. The gun was later updated with improved furniture and a 7-inch (180 mm) 1-turn rifled barrel. The ARDC recommended additional commonality with the M16A2 rifle and a 14.5-inch (370 mm) barrel.

In January 1984, the US Army revised the QRP, and a month later, the Army officially approved the development of a new carbine.

Originally a joint Army-Marine Corps project, the Army withdrew funding in 1986. The XM4 was completed in 1987 and the Marine Corps adopted 892 for that fiscal year and was designated "Carbine, 5.56mm, M4".

Because of the 1991 Gulf War experience, the Army awarded Colt its first production contract for the M4 carbine in May and July 1993, and its first production contract for the M4A1 carbine for SOCOM operators in February 1994.

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After the battle of Mogadishu (1993), interest in the M4 carbine increased. The Rangers complained that the M16 rifle was "inconvenient," but Delta Force members armed with CAR-15s in the same battle had no such complaints. .

The M4 carbine first saw action in the hands of US forces deployed to Kosovo in 1999 to support the NATO-led KFOR peacekeeping force.

It was later used extensively by the US military during the global war on terrorism and was used in operations such as Freedom and Iraqi Freedom.

In the Army, the M4 replaced the M16A2 as the primary weapon for forward-deployed personnel by 2005.

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Because it fires a more effective rifle bullet, it provides superior stopping power and better penetration of modern body armor.

A U.S. Army 82nd paratrooper holds an M4 carbine during the NATO-led KFOR mission in Bittina, Kosovo, in January 2000.

In 2007, the Marine Corps ordered officers (up to lieutenant colonel) and noncommissioned officers to carry M4 carbines instead of M9 pistols.

This is in keeping with the Marine Corps doctrine of "Every Marine is a Marksman." However, the Marine Corps chose the full-size M16A4 instead of the M4 as its standard infantry rifle. The US Navy Corpsum E5 and below will also be issued the M4 instead of the M9.

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The regular rifle of the Marine Corps was armed with the M16A4, but the M4 was deployed by troops in positions where a full rifle would be too bulky, such as vehicle operators, fire teams, and squad leaders. As of 2013, the US Marine Corps had 80,000 M4 carbines in its inventory.

By July 2015, the major Marine Commands had switched from the M16A4 to the M4 as the standard infantry rifle, as had the Army. This is due to the carbine's light weight, compact power and ability to cope with modern combat situations, primarily at close range. If the crew needs to take measurements at longer ranges, the M27 IAR can be used as a designated marksman rifle. Once the changes were approved, the M16s were to be issued to support personnel, but the arsenal already had 17,000 M4s to supply all the necessary infantry.

In October 2015, Commander Robert Kneller officially approved the M4 carbine as the primary weapon for all infantry battalions, security forces, and Marine support schools. The relocation was expected to be completed by September 2016.

In December 2017, the Marine Corps announced its decision to equip all Marines in infantry units with M27s, replacing the M4s in service in that unit.

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MARSOC will remain on M4. Its short barrel makes it suitable for operations in confined spaces.

This allowed companies other than Colt to compete with their own M4 designs. The Army plans to place its final M4 order in 2010.

In October 2009, Army Ordnance officers proposed several changes to the M4 to Congress. Requested modifications include an electronic round counter that records the number of shots fired, a heavier barrel, and possibly replacing the Stoner expansion gas system with a gas piston system.

However, the benefits of these changes are being scrutinized by both the military and civilian firearms communities.

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According to a PDF detailing the M4 Carbine upgrade plan released by PEO Soldier, the direct impingement system compares direct impingement systems to commercial gas piston operating systems to find and use the best operating system currently available. . place. Modified US Army M4A1.

In September 2010, the Army announced that it would purchase 12,000 M4A1s from Colt Firearms by 2010 and order another 25,000 M4A1s by early 2011. The Service Department planned to purchase 12,000 M4A1 conversion kits in early 2011. In late 2011, the Army received an additional 65,000 conversion kits. From there, the Army had to decide to upgrade all M4s.

In April 2012, the US Army announced that it would begin purchasing more than 120,000 M4A1 carbines to begin the conversion of forward line units from the original M4 to the new M4A1 version. The first 24,000 were to be built by Remington Arms. Remington planned to have the M4A1 in production from mid-2013 to mid-2014.

After this contract is completed, Colt and Remington will produce more than 100,000 M4A1s for the US Army. Colt tried to sue the Army to force it not to use Remington to manufacture the M4, so the Army revised the original request for the new M4A1 to avoid legal problems from Colt.

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Instead of assigning the contract to Remington, the Army awarded FN Herstal a contract on February 22, 2013, for 120,000 M4A1 carbines at a cost of $77 million.

The first attempt to find a replacement for the M4 was made in 1986 in the Advanced Combat Rifle program, where the caseless Heckler & Koch G11 and various flechette rifles were tested, although these designs were mostly prototypes. Lack of credibility.

In the 1990s, a targeted individual combat arms race was held to find a replacement for the M4. Two designs were created by Heckler and Koch. The XM29 OICW incorporated a smart-grade launcher, but was discontinued in 2004 because it was too heavy. The XM8 was discontinued in 2005 due to lack of significant improvements. On the M4.

The Heckler & Koch HK416 was introduced in 2005 and incorporated the same lower receiver as the M4A1, but replaced the direct-fire system with a gas-operated rotary bolt to compete with the G36.

Ak 47 Wound Over An M4

That same year, the Rangers and Navy SEALs adopted the FN SCAR, but later abandoned the purchase after not seeing significant improvements over the M4A1.

The Next Generation Squad Weapons (NGSW) was launched in 2017 after the failure of individual carbine programs. The program was designed to replace the M4 carbine and M249 SAW with weapons that compensated for perceived deficiencies in long-range combat. It also addresses concerns about the effectiveness of conventional 5.56x45mm ammunition against armed forces wearing body armor in future peer-to-peer or near-peer conflicts. It is now placed in x51mm print.

SIG Sauer, Textron Systems, FN Herstal, True Velocity (formerly Lonestar Future Weapons and Geral Dynamics) and PCP Tactical participated.

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