Leupold ring mounts provide a high-quality alternative to standard firearm manufacturer ring mounts and offer a no-tap mounting solution for most .22 Rimfire rifles equipped with an 11mm, 13mm or 3/8 inches dovetail rail. This specific model is engineered to fit the Ruger M77. Constructed from solid steel, these rings deliver superior integrity and precise tolerances. The connection between your scope and firearm is of utmost importance, which is why our mounts are as robust and reliable as the Leupold optics they support. With an extensive range of mounting systems available, you are certain to find the ideal match for your firearm and shooting style. Manufactured in the USA and backed by a lifetime guarantee, Leupold mounts are designed to withstand rigorous use without failure.