M4A1 Block II. PARTS LIST. Lower Receiver. Lower Receiver: Colt A2 profile Lower w/ UID Label ... Barrel: Colt 14.5” Socom/Government Profile Gas Block: FSP, Badger Ordinance Mk12 gas block, Daniel Defense Mk12 Gas Block Muzzle Device: Knights Armament NT4 Flash Hider, Surefire Socom 4 Prong Flash Hider Hand Guard: Daniel Defense M4A1 RIS II ...

The SOPMOD Block II is a more radical modification kit for the baseline M4A1 that can be fitted at first-echelon unit maintenance level. Components of the Block II were phased in gradually, but the most distinctive feature is the free-floated Daniel Defense Rail Interface System II …

The M4A1 AR15 style firearm features the RIS II picatinny quad rail, which has been in use by US Special Operations Command (SOCOM) for the SOPMOD Block II program since 2005. The M4A1 is built around a 14.5 inch Cold Hammer Forged M4 Profile barrel with a permanently attached Daniel Defense Flash Suppressor.

使用RIS II的Mk18 MOD1比较早装备部队，而使用RIS II的M4A1也越来越多出现在阿富汗的实战部队中。 DDL URG为整体式上机匣，即护木固定在机匣前段，与枪管不接触。 这是当前的潮流——浮置式护木。 不过DDL URG有两种，一种是仍然可以保留原来的三角形准星座，另一种则完全取消了枪管上的准星座，如果需要机械瞄具，则需要在导轨上安装准星。 目前所见的训练或实战照片中，基本上都是后者。 至于配套的附件也换了新的型号，比如EOTech 553、ELCAN DR …

第1代SOPMOD M4 的主要承包商是KAC 公司， 主要模块包括一个有上下左右四段M1913 标准 导轨的 RIS 护木，安装在柯尔特公司生产的重型枪管 M4A1 上。 其他的部件还包括截 短了枪管的快卸M203A2榴弹发射器及其瞄准具、一个KAC 快速拆卸（QD）消声器、 KAC后备照门、一支战术灯、一个AN/PEQ-2可见光/红外激光指示器，还有Trijicon的ACOG和反射式瞄准镜及一个夜视瞄准镜，但也有许多士兵把Trijicon反射瞄准镜换成M68 CCO或EOTech全息瞄准镜。 SOPMOD …

2019年1月12日 · 美国陆军特种作战司令部已经决定将采用URGI（upper receiver group-improved，改进型上机匣组），URGI将取代USASOC现役的BLOCK II M4A1 URG，作为未来的主力卡宾枪。 比起BLOCK II URG，URGI的改进之处在于：1、将…

Our CQBR Block II is equipped with a 14.5″ Chrome-Lined, 5R, 4150V chrome moly vanadium barrel finished in a clean Mag Phos finish with an ASR suppressor-ready muzzle. The TYPE-A M4A1 Block II is driven by our TYPE-A Chrome Nitride bolt carrier group with an R.E.M Polish.

The Special Operations Peculiar MODification (SOPMOD) kit is an accessory system for the M4A1 carbine, CQBR, FN SCAR Mk 16/17, HK416 and other weapons used by United States Special Operations Command (USSOCOM) special forces units, though it …

If you’re looking for a project, I recommend building your own clone of a military-issued rifle or carbine. Regardless if you go retro with an early Block I or a current Block II model being used by our troops overseas, transforming an AR into a clone of a military gun is both challenging and fun.

2011年7月7日 · To those wondering what makes an M4A1 a Block II model, here are some of the characteristics and equipment that the Block II M4A1s have: Barrel: 14.5" M4 or SOCOM contour barrel