Brownells BRN AR-15 Bolt Carrier Gas Key - Black

The Brownells BRN AR-15 Bolt Carrier Gas Key is a direct replacement gas key designed for AR-15 bolt carriers. Finished in black, this part channels propellant gas from the gas tube to cycle the bolt carrier group. Compatible with standard AR-15 platforms, it is a reliable solution for builders and gunsmiths performing bolt carrier group assembly or replacement repairs.