Cadillac Gage / Colt Firearms

The Stoner 63 is a modular weapon system designed by Eugene Stoner in the early 1960s. It was one of the first truly modular firearm designs, capable of being configured as an assault rifle, carbine, light machine gun, or belt-fed machine gun. The most common configuration was the light machine gun variant used by US special forces during the Vietnam War. The weapon is chambered in 5.56x45mm and uses a unique gas-operated piston system. The Stoner 63 was manufactured by Cadillac Gage and later by Colt.