AR9 Blowback Upper Builders Kit



A limited time offer! Builders kit including our “Guaranteed to Feed” 9mm barrel, bolt, and 7.5 ounce heavy extended deadblow buffer. Tested to run on Angstadt, Black Creek Precision, Aero EPC, New Frontier Armory/, and Quartercircle 10 small frame Glock magazine lower receivers. Muzzle device not included.

  • 1/10 twist, 4140 CM black nitride barrel
  • Colt/Glock compatible ramped bolt
  • 7.5 oz. extended length steel bodied deadblow buffer.
  • engineered to run with all currently available small frame Glock lowers
  • 1/2 x 28 Muzzle thread


Note: I have a limited number of EPC Mag catches reserved for the build kits listed in stock. Call or email me if you want to add one to your order.

Additional information


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Macon Armory


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