Ar-15 Brownells 9mm Bolt Carrier Group - M16/Ar-15 Brownells 9mm Bolt Carrier Black Nitride

The Brownells 9mm AR-15 Bolt Carrier Group is specifically designed for use in pistol-caliber carbines, which are a growing trend in the AR-15 world. This bolt-carrier group allows AR builders to custom-make their own 9mm AR. The Brownells 9mm AR-15 Bolt Carrier Group is constructed entirely from a single piece of steel billet and features a pinned weight that can be taken out for compatibility with different buffer systems. Compatible with both Glock and Colt magazines Features complete nitride treatment for reduced friction The Brownells 9mm AR-15 Bolt Carrier Group also features a captured firing pin in order to prevent the possibility of slam fires. Mfg: Brownells