Concepts & Programs HomeProgramsFocus Area 4: Modernization & TechnologyPart 1: Equipping the MarineM27

U.S. Marines with 3rd Battalion 8th Marine Regiment fire the M27 Infantry Automatic Rifle during a live-fire weapons exercise at range F-18 on Camp Lejeune, N.C., Dec. 8, 2017. The M27 has been introduced to different units throughout the Marine Corps within the last six months. (U.S. Marine Corps photo by Lance Cpl. Michaela R. Gregory)

The M27 Infantry Automatic Rifle (IAR) is a lightweight, air-cooled, gas piston operated, shoulder-fired weapon that is used primarily as an alternative to heavier belt-fed squad automatic weapons. The IAR can sustain a rate of fire of 36 rounds a minute with a 600-round load. The maximum effective range of the IAR is 550 meters for individual targets and 700 meters for area targets.

Operational Impact
The IAR significantly enhances the Automatic Rifleman’s mobility and movement speed over heavier automatic weapons while preserving the Marine’s ability to suppress or destroy targets of most immediate concern to the fire team.

Program Status
The IAR achieved full operational capability in 2nd quarter fiscal year 2012 and is currently in sustainment.

Procurement Profile: FY 2018: N/A      FY 2019: N/A

Developer/Manufacturer: Heckler & Koch, Ashburn, VA

Modernization and Technology