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.
- 1/10 twist, 4140 CM black nitride barrel
- Colt pattern 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