The TacFire AR-15 .45 ACP Upper Receiver is an affordable, factory-assembled pistol caliber carbine (PCC)-style upper receiver designed for reliable performance and consistent accuracy. This complete upper receiver is built from forged aluminum and comes with a factory-assembled bolt carrier group (BCG), charging handle, dust cover, and forward assist. The high-performance steel barrel offers superior accuracy potential with most .45 ACP loads and bullet weights, and the factory-installed birdcage flash hider drastically reduces your flash signature for improved low-light performance.