AR45 Blowback Upper Builders Kit
A limited time offer! Builders kit including our "Guaranteed to Feed" 45ACP barrel, bolt, and 10 ounce heavy extended buffer.Tested to run on Green Swamp Tactical, New Frontier Armory/Palmetto State Armory, and Quartercircle 10 large frame Glock magazine lower receivers. Runs flawlessly with our Macon Armory Magazines and magwell adapters.
- 1/16 twist, 4140 CM black nitride barrel
- Colt pattern ramped bolt
- 10 oz. extended length steel bodied carbide filled buffer.
- engineered to run with all currently available large frame Glock lowers
- 5/8 x 24 Muzzle thread