The M27 Infantry Automatic Rifle (IAR) is a 5.56mm, select-fire assault rifle / squad automatic weapon developed from the HK416 by Heckler & Koch.

The Colt Infantry Automatic Rifle 6940 (commonly shortened to Colt IAR or IAR6940) is a light machine gun designed by Phil Hinckley and manufactured by American firearms manufacturer Colt.

2009年，海军陆战队的iar项目最终由16英寸型的hk416赢得，并被定型为m27。而后柯尔特iar开始转向商业市场，目前被发现巴西军警有采购此枪。 2008年在ausa上公布的最新colt iar. smglee在ausa2008上拍摄的colt iar. 重10.1磅的colt 6940. 重9.28磅的colt 6940h

當時有包括來自柯特(Colt)的Colt IAR、新加坡的無敵100輕機槍(Ultimax MG)、LWRC的LWRC IAR和HK的M27前來競標，而雀屏中選的就是M27，並成了今日美國陸戰隊步槍班的標準自動武器。

2014年10月1日 · Colt Infantry Automatic Rifle: IAR6940. The Colt IAR6960 is a lightweight, gas operated, magazine fed, 5.56x45mm caliber automatic rifle. The IAR is based on the time tested and combat proven M16/M4 series rifles. The IAR incorporates the same safety features and human engineering features as the M16/M4 series of weapons.

2022年9月16日 · The Marine Corps adopted the M27 IAR (Infantry Automatic Rifle) after a long testing period, and the idea of an infantry automatic rifle became mainstream. We’ve covered the history of the IAR concept and how it dates back to WWI.

M27 步兵自動步槍（英語： M27 Infantry Automatic Rifle ，簡稱：M27、IAR或M27 IAR，以下簡稱為M27 IAR）是一款5.56毫米口徑可選射的突擊步槍，主要基於德國軍火製造商黑克勒&科赫所生產的HK416 北約 5.56×45毫米 口徑 突擊步槍的16.5吋（419.1毫米）之重槍管版本，目前由美國 ...

HK M27自动步枪（英语：HK M27 Infantry Automatic Rifle，简称：M27、IAR或M27 IAR，以下简称：M27 IAR）是美国海军陆战队（英语：United States Marine Corps，简称：USMC）对德国军火制造商黑克勒-科赫于2009年以HK416 5.56 × 45毫米北约口径突击步枪的16.5英寸（419.1毫 …

The M27 Infantry Automatic Rifle (IAR) is a lightweight, aircooled, pusher rod gas operated, magazine fed, shoulder fired weapon. It operates in semi-automatic and automatic modes of fire. This...

The M27 Infantry Automatic Rifle (IAR) is a lightweight, magazine-fed 5.56mm weapon used by the United States Marine Corps. It is intended to enhance an automatic rifleman's maneuverability and displacement speed, and it is based on the HK416 .