3/8 or 11mm dovetail riser mount Matte black 1 long .68 riser height .76 overall height 2.1 oz. Additional dovetail mounting points on both sides 2 risers included * No gun is perfect for every shooter. If your optics need a lift to perfectly align with your eyes, then add a BKL riser. It's easy to install and will hold your optics tightly and securely.