MIL-W-13855D (INTERIM AMENDMENT 4), MILITARY SPECIFICATION: WEAPONS; SMALL ARMS AND AIRCRAFT ARMAMENT SUBSYSTEMS, GENERAL SPECIFICATION FOR (20 APR 1983)

MIL-W-13855D (INTERIM AMENDMENT 4), MILITARY SPECIFICATION: WEAPONS; SMALL ARMS AND AIRCRAFT ARMAMENT SUBSYSTEMS, GENERAL SPECIFICATION FOR (20 APR 1983)., This interim amendment is approved for use by the Department of the Army with Military Specification MIL-W-13855D(AR) dated 21 February 1973.