The only thing I know of is the mount itself, which mounts on the barrel with 4 screws and using 2 cross bolts clamps on the rail on the bottom of the scope. T/C made two of these, one for the Phantom type scope and one for Lobo and T/C scopes. I have both kinds on some of my barrels. If this is what your talking about you might find one in the Contender Classifieds. Stan