Carbine Magazine

[Thom M.]

I just found some 15rd. carbine mags, one of them is marked with a B in a circle. I never ran into that brand befor, is it significant or ordinary ?

Information

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[phillydude]

M1 / M2 Carbine Magazine FAQ
B [circled] (I've seen some cases of 100 that were marked Winchester, but packed with these "B" magazines-- could they be a subcontract from Bridgeport?)

[dnikkor]

Replacement mag by Bridgeport Metal Goods according to:
M1 Carbine 15 rnd Magazines