Leupold steel Standard (STD) rings and bases represent the most adaptable mounting system available. This particular model is designed to fit a Mauser 96 and is ideally suited for Standard calibers below .300 Win Mag. The STD rings are available in five distinct heights and are precisely engineered to align with STD 1-piece or 2-piece bases. The front dovetail ring allows for lateral adjustment through the rear windage screws during bore sighting. Additionally, shims can be employed to preserve the scope's elevation adjustment for bullet drop compensation (BDC) dial applications. 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 to choose from, you are certain to find the perfect fit for your firearm and shooting style. Manufactured in the USA and backed by a lifetime guarantee, Leupold mounts are built to withstand rigorous use and will consistently perform without fail.