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The U.S. M3-M3A1 Message Board

All NFA Rules Apply - Visit Frank Iannamico's Machinegunbooks.com website to purchase "The U.S. M3-3A1 Submachine Gun" book!

449 topics in this forum

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  1. M3A1 build video

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  2. M3 Stock question

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  3. M3 retracting pawl spring

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  4. Heidler M3 book

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