The TacFire Pistol Upper Assembly is a complete solution chambered in .45 ACP. It features a 7 barrel with a black nitride finish and a standard A2 flash hider. The receiver is constructed from black anodized 7075-T6 aluminum for maximum durability. This unit includes a modular black M-LOK handguard for accessory mounting and comes fully assembled with a specialized .45 ACP bolt carrier group. Designed for the AR-platform, this upper is factory-built and ready to be pinned onto a compatible lower receiver for immediate use. Note: This complete assembly includes the bolt carrier group and is designed specifically for the .45 ACP pistol caliber.