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warningshot · October 21, 2012, 12:46 AM

I came across a 15 round M1 Carbine magazine today. It has a, 'IS', or 'SI' stamp on the exterior body, a flat area I'd call the spine of the magazine. Anyone know if this is GI? Thanks.

October 21, 2012, 12:46 AM	#1
warningshot Senior Member Join Date: October 7, 2009 Posts: 995	M1 Carbine Magazine question. I came across a 15 round M1 Carbine magazine today. It has a, 'IS', or 'SI' stamp on the exterior body, a flat area I'd call the spine of the magazine. Anyone know if this is GI? Thanks.