The Sportsmatch ATP61 30mm adjustable extra high scope mounts can clear up to 60 mm objective lens scopes on most rifles. Adjust the overall height of the rings by raising both pieces equally or raise the rear only for added elevation (similar concept as the 20 MOA rails for rifles). These are for 9.5mm - 11.5mm dovetail scope rails. The package includes the new easy fit recoil pin.