Weaver Grand Slam Rings have been engineered and manufactured to instill confidence, confidence that your ring will not fail when you are making the shot of a lifetime. Each Grand Slam Ring starts as a piece of solid steel bar stock and is slowly and meticulously machined into a finished ring. These rings feature the positive dovetail locking system and boast rear mount windage adjustments. They offer maximum strength in steel construction and top-notch recoil resistance for the ultimate hold on your scope. Proudly made in the U.S.A