The AR-Stoner Extended Bolt Catch makes releasing the bolt even easier. The ergonomic design extends the bolt release down to the trigger guard, allowing for a more seamless reload. This extended bolt catch fits over most 5.56 mil-spec bolt catch, and locks into place with 3 set screws. Features:Ergonomic contoured designExtends the bolt release option to the right side of the weaponQuick bolt on designFits over most 5.56 mil-spec bolt catch and is locked in place with 3 set screwsQuick one hand acquisition allows for faster reloading