MIL-S-70471 (AMENDMENT 1), MILITARY SPECIFICATION: SAW, M249 BLANK AMMUNITION MAGAZINE ASSEMBLY AND FEEDSTRAP (25 JUN 1990)., This amendment forms a part of Military Specification MIL-S-7O471(AR), dated 27 January 1986 , and is approved for use by the U.S. Army Armament, Munitions and Chemical Command and is available for use by all Departments and Agencies of the Department of Defense.