It"s time to turn "tactical into practical" These 30mm Tactical scope Rings are designed to give you as much control as possible over extreme types of shooting at a practical price. BARSKA 30mm Tactical scope Rings are the best choice when mounting your tactical scope. Precision machining the Rings form T6 Aluminum provides the strength a tactical shooter expects without excess weight. These Rings are equipped with inserts that prevent ring marks on the finish of the scope tube as well as versatility for use on both 30mm and 1- Inch scopes. The bottom line: These Rings are designed for the tactical shooter who expects nothing but the best performance at a practical price.