AR-15 Bolt Carrier Group

Upgrade your rifle with a high-quality AR15 Bolt Carrier Group (BCG) from Bear Creek Arsenal, built for dependable cycling, durability, and long-term reliability. Manufactured from durable 9310 steel and Magnetic Particle Inspected (MPI), each AR 15 BCG is designed for consistent performance and includes the bolt, carrier, firing pin, staked gas key, cam pin, and retaining pin. Choose from Black Nitride or Nickel Boron finishes, with Black Nitride offering corrosion resistance and durability, while Nickel Boron provides enhanced lubricity and easier cleaning. Available for popular AR15 calibers including 5.56 NATO, 7.62x39, and 6.5 Grendel, these AR 15 BCGs provide reliable performance for a variety of rifle builds and are backed by our limited lifetime warranty.