Aero Precision PRO Series 5.56 AR-15 Bolt Carrier Group – Black Nitride

Build your next AR-15 project on a foundation of quality with the Aero Precision PRO Series 5.56 AR-15 Bolt Carrier Group. This top-of-the-line BCG is purpose-built and designed with top-tier components to deliver uncompromising durability, even in the heat of battle. The bolt is made from heat-treated 9310 steel for maximum strength, while most bolts are made with swagged cam pin channels that actually remove material during manufacturing, making them weaker. Not so with the PRO Series BCG – it features a counter bored channel that eliminates the need to force the pin, and avoids a common failure point for bolt carrier groups. The cam pin is also indexed to ensure proper staking during assembly/disassembly and prevent uneven wear during operation.