Leupold’s Ruger #1/77/22 Scope Mounts deliver a rock-solid interface between your rifle and optic. Available in 1-inch, 30mm, and 34mm ring diameters and in a wide assortment of heights, these rings are compatible with Rugers No. 1 and M77/11 rifles with an 11mm, 13mm, or 3/8” dovetail rail, and are precision machined from solid steel for greater integrity and tighter tolerances. Leupold RM Ruger #1/77/22 1" Low Matte Ringmount 60924