Ambidextrous 5.56/223 Bolt Catch Extension / Release LeverAmbidextrous 5. 56 223 Bolt Catch Extension Release Lever Designed to mount on to any standard bolt catch and allows for bolt control from the right side. Made from 6061 T6 aluminum and hard coat anodized. Functional for both left and right handed shooters, a great improvement for any user. Mounting hardware included. Features Compatible with standard bolt catches, found on Ruger Precision Rifles 5. 56 223 and other compatible models Easy attachment