Despite the shorter effective range and decreased lethality, as compared to the M16A2 or M16A4 rifle, by 2015 the M4 / M4A1 carbine became the primary fighting rifle for US Army and US Marine Corps Infantry units.

Since its adoption in 1994, [9] the M4 has undergone over 90 modifications to improve the weapon's adaptability, ergonomics and modularity, including: the M4A1, which possesses a thicker barrel and a replacement of the burst-fire control group with a fully automatic one; the SOPMOD, an accessory kit containing optical attachments; and the underb...

Phase I upgrades the Army’s M4s to the Special Forces’ M4A1, while Phase II explores future improvements for the M4A1 Carbine to deliver enhanced reliability, durability, ergonomics and zero...

The M4A1 is a fully automatic variant of the M4 carbine – a shorter and lighter variant of the M16. It went into service in 1994 to replace the M16 in certain roles. The M4A1 trigger group operates on either Safe, Semi-Automatic, or Fully Automatic settings. Cartridges are the 5.56x45mm (.223) NATO cartridge that is […]

Mar 26, 2025 · Full-auto capability replaced the three-round burst, giving operators the decisive edge in close-range firefights. But the true stroke of genius lay in the replacement of the fixed carrying handle...

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Jun 9, 2011 · It’s not the legendary Single Action Army nor the venerable Government Model—those are so last century. It’s the M4A1, the U.S. military’s official issue-rifle.

Aug 10, 2023 · The M4/M4A Carbine is a 5.56mm compact, lightweight, gas-operated, air-cooled, magazine-fed weapon system with selective fire that can be sighted from the shoulder. The M4/M4A Carbine is the latest weapon in a family of firearms dating back to the M16 and even to the carbine AR-15.

May 2, 2018 · 为了解决这一问题，美军随即将M4改进推出了M4A1。 在M4A1上使用者可以使用连续射击模式完成连续击发，而为了满足使用者不同的战术需要，M4A1将M4原有的握把式上机匣改为了具有战术导轨的平顶式上机匣（后期生产的部分M4也使用了平顶式上机匣，所以这一点不能作为判断M4/M4A1的标准）。 M4A1的诞生可以说是完美的切合了特种作战的需求，M4A1也在1994年正式在美军特种部队和快速反应部队换装。 美国特种作战部（USSOCOM）把M4A1 …

Apr 10, 2018 · 修改一年之后，2016年11月，HLTV统计了Top10职业队伍的50名职业选手中M4A1-S与M4A4的使用占比，M4A4以54%的占比对比M4A1-S的38%。 这是否能说明当前版本下，M4A4就是一把比M4A1-S更为优秀的武器呢？ 答案自然是否定的，适合职业选手的并不一定适合你，在许多情况下，M4A1-S仍旧是一把很优秀的武器，接下来我们来详细分析一下这对冤家的各自优劣。 M4A4.