The TacFire Pistol Upper Assembly is a complete, factory-built solution chambered in 9mm Luger. It features a 10 4150 Chrome Moly Steel barrel with a black nitride finish and a standard A2 flash hider. Built on a forged 7075-T6 aluminum receiver with a black anodized finish, this AR-Platform unit includes a modular black M-LOK free-float handguard for accessory mounting. This plug-and-play upper comes fully assembled with a specialized 9mm Luger blowback bolt carrier group, making it ready to be pinned onto a compatible pistol caliber lower receiver. Note: As a blowback-operated system, this upper functions without a gas block or tube, ensuring reliable cycling across a wide range of 9mm ammunition weights.