TacFire BU5565 300 AAC Blackout AR Pistol Upper Assembly - 10in - Black - The TacFire Pistol Upper Assembly is chambered in .300 AAC Blackout and features a compact 10in barrel. Built with a 7075-T6 aluminum receiver and finished with a black anodized coating, the assembly combines lightweight construction with durable materials and a clean, streamlined appearance. Designed for compatible AR-platform configurations, this upper assembly offers a compact option for builders seeking a 300 AAC Blackout setup. Always verify applicable federal, state, and local laws and regulations before purchasing, assembling, or using this product. 10in Barrel; 7075-T6 Aluminum Receiver; A2 flash Hider;