MIL-S-23389B, MILITARY SPECIFICATION: SHIPPING AND STORAGE CONTAINER, CARTRIDGE, 20MM, M548 (29-SEP-1975)
MIL-S-23389B, MILITARY SPECIFICATION: SHIPPING AND STORAGE CONTAINER, CARTRIDGE, 20MM, M548 (29-SEP-1975)., This specification covers one model steel container for shipping and storing ammunition.