PM Infantry Weapons undergoing largest modernization effort in decades - 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, North Carolina, Dec. 8, 2017. The Program Manager for Infantry Weapons at Marine Corps Systems Command is modernizing various weapon systems to gain a competitive edge over near-peer threats. (U.S. Marine Corps photo by Lance Cpl. Michaela R. Gregory)