barrel, an infantry automatic rifle (IARTM), a submachine gun chambered for 9mm ammunition, and the 40mm M203 grenade launcher.

In July 2012, the U.S. Marine Corps awarded Colt a five-year, Indefinite Delivery/Indefinite Quantity contract for up to 12,000 M-45 MEUSOC Close Quarter Battle Pistols (CQBP) based on the current embodiment of the M1911 pistol