D-P-355A, FEDERAL SPECIFICATION: PISTOL, CALIBER .45, AUTOMATIC: M1911A1 (16 SEP 1964) [NO S/S DOCUMENT]
D-P-355A, FEDERAL SPECIFICATION: PISTOL, CALIBER .45, AUTOMATIC: M1911A1 (16 SEP 1964) [NO S/S DOCUMENT]., This specification covers one type of caliber .45 semiautomatic, recoil operated, magazine fed pistol used as a defensive hand
weapon.