MIL-C-43534: CASE, AMMUNITION, M-16, 20-ROUND MAGAZINE
Military specification MIL-C-43534 initially covered an ammunition case designed to carry four 20-round magazines used with the M-16 rifle, and then a case designed to carry a battery coolant unit used with the FIM-92 Stinger.
- 1977-06-03: Revision C Notice 1 - cancelled and superseded by MIL-C-47301 
- 1976-10-18: Revision C; CASE, BATTERY COOLANT UNIT (STINGER)
- 1968-03-15: Revision A, CASE, AMMUNITION, M-16, 20-ROUND MAGAZINE 
- Stanton, Shelby., U.S. Army Uniforms of the Vietnam War, Stackpole Books, 1992. p. 151.