MIL-P-46329A (AMENDMENT-5), MILITARY SPECIFICATION: PERISCOPE, TANK: M13, M14A1, M17, M17C, M26, M27, M37 AND M45, PERISCOPE, 15 DEG. UPLOOK AND PERISCOPE, 20 DEG. UPLOOK (15-JUN-1998)

MIL-P-46329A (AMENDMENT-5), MILITARY SPECIFICATION: PERISCOPE, TANK: M13, M14A1, M17, M17C, M26, M27, M37 AND M45, PERISCOPE, 15 DEG. UPLOOK AND PERISCOPE, 20 DEG. UPLOOK (15-JUN-1998)., This amendment forms a part of MIL-P –46329A (AR), dated 03 MARCH 1972, and is approved for use by the US Army Armament, Research, Development, and Engineering Center, and is available for use by all Departments and Agency of the Department of Defense.