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Crosby magazines


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I have read that early Crosby 30 round magazines would not fit the Thompson M1 properly. There was a fix, and many of the magazines were altered.

Is there any way to tell if a Crosby magazine has been altered? With the price of these magazines climbing, maybe it is just a better idea to pass on Crosby 30 rounders.

Edited by Rabbit57
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The XXXs modified for the M1 are easy to spot. The feed lip protrusion on the front of the magazine is ground off leaving grinding marks and touch up bluing visible. I think samples of these are pictured in the Magazine section of Pinned Topics.

 

 

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Edited by 1921A
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I don't know about modifications, but I've never gotten a Crosby XXX mag that didn't work perfectly. I have many, including most that came out of the original factory red waxed cheesecloth wrap. Don't pass these up. They're well made, and are the only original USGI XXX mags that are marked US 30 CARTRIDGE CAL 45.

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