MIL-C-70599, MILITARY SPECIFICATION: CARBINE, 5.56MM: M4 (01 APR 1987) [S/S BY MIL-DTL-70599B]

MIL-C-70599, MILITARY SPECIFICATION: CARBINE, 5.56MM: M4 (01 APR 1987) [S/S BY MIL-DTL-70599B]., This specification covers the requirements, examinations and tests for a 5.56mm lightweight, air-cooled, gas operated, magazine-fed carbine designed for either three shot automatic burst or semi-automatic fire (see 6.1).