Barska 30mm Extra-High Weaver Scope Rings AI11766 are designed to provide a reliable mounting base to the largest, most high-magnification rifle scopes available. These extra-high Barska rifle scope rings are built for scopes with wide objective lenses, high magnification rates, and extended lengths, since the extra-high mounting profile can accommodate the broad lenses that characterize high-brightness, high-powered scopes. Barska has built the rings to mount to any Weaver-style rail with one sturdy set screw, and its 30mm diameter will accommodate most modern riflescopes. The Barska 30mm Extra High Weaver Iron Sight Riflescope Rings feature a hollow peep sight base to give you access to your iron sights, even when you have the rings and a scope mounted, allowing you to quickly swap between close-range targets with the iron sights and long-range targets with your scope. With a durable aluminum construction, attractive black matte finish, and reliably secure mounting power, the Barska 30mm Weaver Extra High Rings 2-Pack is a great way to accurately mount your scope.