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

M27侦察武器套件（Reconnaissance Weapons Kit）其实就是把M27的16.5英寸枪管换成11英寸（约279mm）枪管的CQB版本，据说采购订单来自海军陆战队的侦察部队，不过他们并不是订购枪管回来自己安装，而是订购包括枪管在内的完整的HK416A5上机匣进行更换。

The Advanced Combat Optical Gunsight (ACOG) is a series of prismatic telescopic sights manufactured by Trijicon. The ACOG was originally designed to be used on the M16 rifle and M4 carbine , but Trijicon has also developed ACOG accessories for other firearms.

2022年9月8日 · The M27 would replace the M249 SAW and would become an automatic rifle tasked with laying down suppressive fire. Marines in Afghanistan fell in love with the weapon, and the Marine Corps was impressed. Ya’ boy with an ACOG equipped M249 Helmand Province Afg …

with the M27, the Trijicon ACOG 3.5x35 Squad Day Optic. This is the same optic being used by the Marine Corp for the M249, so it made sense to carry it over for use on the M27. It has a Trijicon RMR red dot reflex sight mounted in Five Marine …

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 …

Now civilians can own a piece of Marine Corps history with a limited-run HK MR27, a civilian-legal tribute to the M27. The MR27 uses the same HK DNA and offers the battlefield-proven reliability, durability, and precision of a worthy homage to such a proven military rifle.

2022年8月14日 · U.S. Marine Corps Lance Cpl. Ryan Hennessey, a rifleman with Golf Company, Battalion Landing Team 2/6, 22nd Marine Expeditionary Unit (MEU), engages targets during a live-fire range.

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 .

Now civilians can own a piece of Marine Corps history with a limited-run HK MR27, a civilian-legal tribute to the M27. the MR27 uses the same HK DNA and offers the battlefield-proven reliability, durability, and precision of a worth homage to such a proven military rifle.