New Arrival! Tech Force Heavy-duty, two-piece, machined aluminum mount holds scopes securely and prevents movement caused by the reverse recoil of spring piston air rifles. Four screw, saddle cap design exerts maximum clamping pressure for superior scope retention and they are easy to install. Dual position rail clamp fits scope rails and dovetailed receivers 9.5mm to 13mm wide. Includes recoil stop pin and allen wrench.