I think the magazine might be a replacement made by Seymour Products Co, with a type 4 baseplate.
Here's a link showing M-1 magazines. M1 Carbine 15 rnd Magazines
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I think the magazine might be a replacement made by Seymour Products Co, with a type 4 baseplate.
Here's a link showing M-1 magazines. M1 Carbine 15 rnd Magazines
![]()