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

HK M27 IAR, KAC ( Knights Armament ) USMC marked flip-up sight set. This is the rare, original KAC sight set used on the US Marian's M27 IAR ( and others ).

A Marine with 1st Battalion, 25th Marine Regiment adjusts the SU-258/PVQ SDO (Trijicon Model TA11SDO-CP) day scope for battle sight zero on his M27 Infantry Automatic Rifle in live fire exercises upon arrival in country.

Nov 7, 2024 · NEW Knights Armament KAC Micro Rear Sight 200-600M USMC Marked USGI, sealed in bags from Knights Armament. Made In USA Link to purchase sight.

The M27 Infantry Automatic Rifle (IAR) is a 5.56mmx45mm rifle that used by United States Marine Corps (USMC) forces. The M27 will replace many of the M249 SAW belt-fed light machine guns currently employed at the squad level.

A variant of the Heckler & Koch HK416, the M27 Infantry Automatic Rifle (IAR) was selected by the U.S. Marine Corps in August 2011 in an innovative program to develop a highly accurate, lightweight, and more reliable alternative to currently fielded light machine guns. The “M27” designation represents a tribute to the 2nd Battalion, 7th Marine

(Ruggedized Miniature Reflex) close combat sight. Note the folded down BUIS (back up iron sight) and Manta‘s black colored soft polymer rail and broomstick covers that will be standard in USMC service. The M27’s ambidextrous selector features HK’s intuitive “pictographic” markings for SAFE in white, SEMI and FULL AUTO in red.

Genuine Knights Armament front sight taken off a factory new rifle. Heckler & Koch M27 IAR front sight from Knights Armament. Made In USA.

Apr 20, 2013 · The M27 comes with three sighting systems; Back Up Iron Sights (BUIS), Squad Day Optic (SDO), and the Ruggedized Miniature Reflex (RMR). The Sight Unit, SU-258/PVQ Squad Day Optic was created for the M249 SAW with a contract from Trijicon in 2009 but has been since mounted on the M27.

Mar 26, 2014 · The model issued with the M27 IAR has the addition of a RMR sight mounted above for use in close range engagements (well within 100m, where you would not want the tunnel vision associated with a larger scope).