The LBE Unlimited AR15 Bolt Carrier Gas Key is a direct-impingement system component designed to route propellant gases from the barrel to cycle your bolt carrier group. Whether you're rebuilding a rifle, replacing a worn gas key, or upgrading to quality components, this assembly handles the critical job of gas redirection—one of the most important interfaces in your AR's operating system. The manganese phosphate exterior paired with a chromed interior finish delivers durability against corrosion and wear, keeping your rifle running reliably through hundreds or thousands of rounds.

This gas key is engineered to fit most standard AR15 and M16 bolt carriers, making it a straightforward upgrade or replacement for shooters who want proven LBE quality without guesswork. The assembly arrives complete with two gas key screws, so you have everything needed for installation—no hunting down odd fasteners or compatibility headaches.

Gas key reliability matters more than most shooters realize. A poor seal or weak fastening can lead to gas leaks, inconsistent cycling, and reliability issues that compound under competition or field conditions. LBE's precision manufacturing and finish choice address these failure points head-on. Whether you're a competitive shooter maintaining a precision rifle, a hunter keeping your AR in top shape, or a builder assembling a dependable carbine, this gas key gives you the confidence that one critical component is done right.

The LBE Unlimited AR15 Bolt Carrier Gas Key is a direct-impingement system component designed to route propellant gases from the barrel to cycle your bolt carrier group. Whether you're rebuilding a rifle, replacing a worn gas key, or upgrading to quality components, this assembly handles the critical job of gas redirection—one of the most important interfaces in your AR's operating system. The manganese phosphate exterior paired with a chromed interior finish delivers durability against corrosion and wear, keeping your rifle running reliably through hundreds or thousands of rounds.

This gas key is engineered to fit most standard AR15 and M16 bolt carriers, making it a straightforward upgrade or replacement for shooters who want proven LBE quality without guesswork. The assembly arrives complete with two gas key screws, so you have everything needed for installation—no hunting down odd fasteners or compatibility headaches.

Gas key reliability matters more than most shooters realize. A poor seal or weak fastening can lead to gas leaks, inconsistent cycling, and reliability issues that compound under competition or field conditions. LBE's precision manufacturing and finish choice address these failure points head-on. Whether you're a competitive shooter maintaining a precision rifle, a hunter keeping your AR in top shape, or a builder assembling a dependable carbine, this gas key gives you the confidence that one critical component is done right.