The TacFire Rifle Upper Assembly is a complete, factory-built solution chambered in .45 ACP. It features a 16 barrel with a black nitride finish and a standard A2 flash hider. The receiver is constructed from forged 7075-T6 aluminum with a black anodized finish for superior durability on the AR-Platform. This unit includes a modular black M-LOK free-float handguard for accessory mounting and comes fully assembled with a specialized .45 ACP blowback bolt carrier group. This plug-and-play upper is ready to be pinned onto a compatible pistol caliber carbine (PCC) lower receiver. Note: As a blowback-operated system, this upper does not require a gas block or gas tube, ensuring reliable cycling with various .45 ACP loads.