Bear Creek Arsenal BCG 7.62x39/12.7x42/9x39, Full Assembly, Nitride

AR-15 7.62x39 12.7x42 9x39 Nitride Bolt Carrier Group 9310 Steel

This is an AR-15 bolt carrier group for 7.62x39mm, with support for 12.7x42 and 9x39. It is made from 9310 alloy steel with a nitride finish. The bolt carrier group is matched to the larger case head calibers on the AR-15 rather than 5.56 NATO. It is sold as a full bolt carrier group.

Key Features

• AR-15 bolt carrier group
• 7.62x39mm compatibility
• 12.7x42 and 9x39 support
• 9310 alloy steel
• Nitride finish
• AR-15 platform

Perfect For

• 7.62x39mm AR-15 builders who need a matching bolt carrier group
• 12.7x42 and 9x39 AR-15 owners who want one bolt carrier group across calibers
• Owners replacing a worn bolt carrier group in a 7.62x39mm upper

9310 Nitride Bolt Carrier Group

This bolt carrier group is made from 9310 alloy steel. It carries a nitride finish in black. It is a full bolt carrier group rather than individual parts. It covers the bolt carrier role on the upper side of the build.

7.62x39mm, 12.7x42, and 9x39 Compatibility

This bolt carrier group is matched to 7.62x39mm on the AR-15 platform. It also supports 12.7x42 and 9x39. These calibers share a larger case head than 5.56 NATO. Owners running 5.56 NATO or other standard AR-15 calibers should look for the bolt carrier group that matches their barrel.

Follow safe handling and manufacturer instructions.

Ensure compliance with all applicable federal, state, and local laws.

Verify compatibility with your upper receiver and barrel before use.

Inspect all components before use.