KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group

The K-SPEC BCG combines multiple key features focused on increasing the reliability of your AR-15 style firearm in any condition. It is a plug and play BCG that will accommodate whatever configuration your mission requires. - Bolt Material: 9310 Steel - Caliber: 5.56mm, .300 AAC Blackout - Features: Dual Ejectors, Angled Carrier Rail Cuts, Downward Gas Ports, Full Auto Profile, Full Chrome Package Contents: KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group Compatible with: AR Platform AR-15