30-Round .45 Magazine Case w/ Shoulder Strap (1943) Friday November 23rd, 2018 admin World War II, Ammunition Carrying Equipment 4,982 views Holds ten .45 30-round magazines, mostly used by paratroopers for carrying spare ammunition for M-1928 sub-machine gun. Stock Number Reference: Case, Magazine, 30-Round, With Shoulder Strap Army Stock Number: 74-C-194 wwiiammo_carrierod3