MIL-G-1175B (NOTICE 1), MILITARY SPECIFICATION: GUN, SUBMACHINE, CALIBER .45, M3A1 (18 APR 1986) [NO S/S DOCUMENT]., This notice should be filed in front of MIL-G-1175B, dated 13 March 1968.MIL-G-1175B has been reviewed and determined to be valid for use in acquisition.