TacFire .300 Blackout AR-15 Upper Receiver Build Kit with Bolt Carrier Group - 7.5"

Tacfire Build Kit w/ LPK 7.5" Nitride Black Barrel for AR-15 45 ACP Complete Pistol - SSPK45ACPLPK

Tacfire Build Kit for AR-15 45 ACP Complete Rifle, Nitride Black - SSRK45ACPLPK

TACFIRE AR Build Kit 300 Blackout AR Platform Black 1/2x28

TacFire SSPK45ACPLPKK AR Build Kit KeyMod 45 ACP Black

TACFIRE AR-15 Pistol Build Kit KeyMod 300 Blk Black Steel

TacFire AR-15 7.62x39 Unassembled Upper Receiver Kit - 5"

TacFire AR-15 .223 / 5.56 Unassembled Upper Receiver Kit - 10"