MIL-C-46554 › Complete Document History
Cartridge, 20mm, HEI, m56a1 (Use MIL-C-46578B)
Obsolete Revision Information: |
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NOT - CARTRIDGE, 20MM, HEI, M56A1 #U - April 5, 1973
BASE - CARTRIDGE, 20MM, HEI, M56A1 #U - July 7, 1961 |