LBE Unlimited AR15 Bolt Carrier Gas Key Features The LBE Unlimited AR15 Bolt Carrier Gas Key directs gas from the barrel into the bolt carrier to cycle the action making it a critical component for reliable semi-automatic function. Its manganese phosphate exterior finish resists corrosion and wear helping the key hold up to repeated firing cycles and field conditions. The chromed interior finish reduces carbon buildup and friction inside the key which supports smoother more consistent gas flow over time. Because it is a direct replacement or upgrade part it restores proper function to a worn or damaged bolt carrier group without requiring a full replacement. This gas key assembly includes two gas key screws giving the installer everything needed to properly stake and secure the key to the bolt carrier during installation. It is built to fit most AR15 and M16 bolt carriers making it a versatile option for builders and armorers working across different rifle configurations. High quality components and precise manufacturing back every LBE part reflecting the company s focus on durability and reliable long term service. Whether used for routine maintenance or as an upgrade during a build the LBE Unlimited AR15 Bolt Carrier Gas Key is a dependable choice for sale at GrabAGun. LBE Unlimited AR15 Bolt Carrier Gas Key Specifications Manufacturer: LBE Unlimited Model: AR15 Bolt Carrier Gas Key Type: Bolt Carrier Group Part Compatible Hosts: AR-15 M16 Bolt Carriers Color: Black Finish: Manganese Phosphate Interior Finish: Chrome Includes: 2 Gas Key Screws Available At: GrabAGun