In 1983, the US Marine Corps adopted the M16A2 rifle, and the US Army adopted it in 1986. The M16A2 fires the improved 5.56×45mm (M855/SS109) cartridge and has a newer adjustable rear sight, case deflector, heavy barrel, improved handguard, pistol grip, and buttstock, as well as a semi-auto and three-round burst fire selector. [21] .

效仿加拿大的c7a2，这名陆战队员的m16a2更换了m4的伸缩式枪托. 前面提到m16a2的全自动型号，称为m16a2e3，海豹曾装备过这种武器，后来美国海军把m16a2e3定型为m16a3。不过m16a2e3更多是用于出口，例如以色列国防军装备了不少，而英国sas也可能使用过m16a2e3。

The M16A2 Assault Rifle (Colt 701) is an American assault rifle developed from the M16A1 in the early 1980s. First model adopted by the US Army, produced from 1963 to 1967. Production model adopted by the US Air Force. Designation of standardized production of the XM16E1, produced from 1967. Interim designs for what would become the M16A2.

2025年2月19日 · m16a3是m16a2的可全自动射击特殊型号，为m16a2刚问世时美国海军所采购，数量不多，主要用于舰艇、基地警卫保安工作。 它具有Safe-Semi-Auto（S-1-F）快慢机，就像M16A1一样。

m16自动步枪是第二次世界大战后美国换装的第二代制式步枪，也是世界上第一种正式列入部队装备的小口径步枪。该系列自动步枪主要包括m16、m16a1和m16a2、m4、m4a1、m16a3、m16a4几种型号。 m16自动步枪由美国著名的枪械设计师尤金·m·斯通纳设计。

在M16A1、M16A2的基础上，柯尔特公司一直在为不同的使用对象设计和生产不同的变型枪。 枪型总数已超过100种了。 有许多枪型只有试验型，有部分枪型装备部队或执法机构，有一些枪型专供出口，还有些只能在民间市场找到。 这里所列出来的只是暂时能收集到的型号。 柯尔特公司的M16型号不同的型号编码代表不同的意思，例如： 采用三位数形式的形式，是有全自动功能或可选择射击方式的步枪。 以前用 Model 作为前缀，不知道什么时候开始改用RO作为前缀了。 pre …

2021年10月5日 · m16a4和m16a2的区别主要在导轨和护手上。 M16A4取消了固定式提把改为可拆卸式，并在枪匣顶部加装皮卡汀尼导轨，拆除提把后可以直接在上面安装瞄准具，不用像M16A2那样把瞄准镜安装在提把上。

2015年12月25日 · I'm looking to get information regarding the development on the M16A1E2. There's a lot regarding the A1E1, which is the A1 upper with a sight wheel, but less regarding an A1E2 which was the final production model. I recently purchased a M16A2 upper receiver which has the window in the back for the rear sight assembly.

2022年10月1日 · The Marines were enthusiastic about the M16A1E1’s enhanced performance, and it was type classified as the M16A2 rifle during September of 1982. It was adopted as the Standard A rifle in November 1983. The Marine’s initial order was for 76,000 M16A2 rifles, and the first delivery went to their Marksmanship Training Unit in January 1984.

More precise and convenient zero point adjustment is now possible. It conforms to the specifications of the new 5.56×45mm NATO (SS109) ammunition, reduced to 1 revolution per 7 inches. Design considering ergonomic factors was applied. However, in the case of the 3-burst function, likes and dislikes differ.