The Mark IMS series effectively addresses the two primary challenges encountered when mounting standard riflescopes on AR-style rifles: scope height and eye relief. This model is engineered to fit AR's mil-spec 1913/picatinny rail and accommodate any scope with a 34mm main tube. It also provides the additional space required for modern bolt actions while incorporating 20 MOA of elevation. Specifically designed for AR use, IMS mounts feature a forward cantilever design, positioning your scope forward on the rail to ensure a complete field of view. The mount elevates the optic's center 1-1/2 inches above the rail, matching the height of open sights on a traditional AR, thus facilitating easier scope viewing without the need to lower your head excessively to the stock. 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 a wide array of mounting systems available, you are certain to find the ideal match for your firearm and shooting style. Manufactured in the USA and guaranteed to withstand a lifetime of rigorous use, Leupold mounts are designed to never disappoint.