The US M14 Rifle entered military service in 1957 and was in full swing deployment by 1959 used by the Army, Navy & Marine Corps. The M14 rifle served until the late 1960’s and was eventually replaced by the modern M16 chambered in .556. Bula Defense manufactures M14 rifles in the US utilizing a forged receiver and other Mil Spec GI components. The Bula Defense M14 USGI Edition features a MIL-SPEC chrome lined , USGI profile barrel that has been proof fired, mag particle inspected and hand stamped, denoting the proof firing and mag particle inspection.