Bravo Company BCM Pistol Receiver Extension Kit for AR-15 Pistols The Bravo Company BCM Pistol Receiver Extension Kit is a comprehensive, mil-spec solution for completing your AR-15 pistol lower receiver build. Machined from aircraft-grade 7075-T6 aluminum and finished with a hard coat anodize per Mil-A-8625F, Type III, Class 2, this kit delivers exceptional durability and corrosion resistance. The pistol receiver extension (buffer tube) features a 1.2-inch outside diameter, making it fully compatible with ATF-compliant SigTac SB15-type pistol stabilizing braces. Everything you need to mount your AR-15, M16, or M4 pistol lower receiver is included in this single, convenient kit. Product Highlights Premium 7075-T6 Aluminum Construction: Precision-machined from aircraft-grade aluminum for superior strength and long-lasting performance. Mil-Spec Hard Coat Anodize: Finished per Mil-A-8625F, Type III, Class 2 for maximum hardness and corrosion resistance. SB15 Brace Compatible: 1.2-inch outside diameter is compatible with ATF-compliant SigTac SB15-type pistol stabilizing braces. BCMGUNFIGHTER QD Receiver End Plate: Includes Bravo Company&';s proprietary quick-detach end plate for sling attachment versatility. Complete Hardware Kit: Comes with carbine action spring, carbine buffer assembly, and M4 castle nut -- everything needed for a full pistol lower build. Specs Brand: Bravo Company Manufacturer Part Number (MPN): BCMBCMPISTOLREKIT UPC: 812526020093 Material: 7075-T6 Aluminum Finish: Hard Coat Anodize, Mil-A-8625F, Type III, Class 2 Outside Diameter: 1.2 inches Buffer Type: Carbine Spring Type: Carbine Action Spring Compatible Brace: ATF-compliant SigTac SB15-type pistol stabilizing brace Compatible Platforms: AR-15, M16, M4 Pistol Lower Receivers Kit Includes: Pistol receiver extension (buffer tube), BCMGUNFIGHTER QD receiver end plate, M4 lock nut (castle nut), carbine action spring, carbine buffer assembly Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.