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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!

484 topics in this forum

  1. M3 Book Addendum - Production Figures

    By dalbert,
    • 4 replies
    • 14k views

  2. U.S. M3-3A1 Submachine Gun (Book)

    By Nick Iannamico,
    • 0 replies
    • 14.7k views

  3. M3 Grease gun - U.K based

    By Ad Lav,
    • 4 replies
    • 603 views

  4. M3A1 barrel sells for $576.00

    By Frank I.,
    • 7 replies
    • 405 views

  5. New M3 video

    By JJX,
    • 0 replies
    • 103 views

  6. M3 blurb from 1987

    By Frank I.,
    • 14 replies
    • 403 views

  7. Installing cocking handle spring

    By Got Uzi,
    • 5 replies
    • 2.1k views

  8. Heidler M3 book

    By BillinBama,
    • 1 reply
    • 388 views

  9. Some Grease Gun finds at SAR show 2025

    By Frank I.,
    • 5 replies
    • 559 views

  10. who were the makers of M3a1 bolts and Cage Codes?

    By tal35,
    • 8 replies
    • 3.3k views

  11. WTS: WWII M3 Grease gun parts

    By Planejack,
    • 3 replies
    • 808 views

  12. M3 Spare parts to sell, opinions please

    By Planejack,
    • 7 replies
    • 681 views

  13. Chuck Spano/Medea Corp

    By Remo Williams 1,
    • 3 replies
    • 1.1k views

  14. New to the M3A1 Grease Gun and Need Advice 1 2

    By tricky9914,
    • 39 replies
    • 3k views

  15. BYOI M3/M3A1 Submachine Gun PS Magazine July 1971

    By Frank I.,
    • 1 reply
    • 412 views

  16. BYOI M3/M3A1 Submachine Gun PS Magazine July 1971

    By Frank I.,
    • 0 replies
    • 243 views

  17. Looking for a demilled M3 frame

    By Jadon,
    • 2 replies
    • 560 views

  18. Progress on my M3 kit.

    By nmsang501,
    • 2 replies
    • 357 views

  19. M3 / M3A1 Grease Gun Stock Catch

    By scotty1957****,
    • 7 replies
    • 1.7k views

  20. Grease gun ejector with a hole

    By Annihilator,
    • 3 replies
    • 990 views

  21. New M3 with rust - who can repark?

    By kp31,
    • 12 replies
    • 1.2k views

  22. M3A1 Chrome Lined Barrel

    By ordnance,
    • 2 replies
    • 433 views

  23. Bought an M3 Submachine Gun. Would like to ask some questions.

    By nmsang501,
    • 15 replies
    • 4.2k views

  24. M3 and M3A1 photos

    By Frank I.,
    • 8 replies
    • 1.4k views

  25. M3 Barrel Assembly Manufacturers

    By nmsang501,
    • 5 replies
    • 791 views
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