M3 Grease Gun original magazine 1962 issue New 45 acp 30 rd

grease gun magazines, 45 acp 30 round. Army production with proof mark “ SPW GL C-153427”. Good solid magazines with strong springs. As you can see some surface rust, can send more pictures upon request. these will fit a Mac 10 with some minor modification too, going by the proof marks on the magazines.