Warne Rings for Ruger - 30mm Fixed Black Warne Scope Mounts Grooved Receiver Line (GRL) rings are specially made to fit the Ruger Factory Integral Receiver Scope Base System. Click the photos to enlarge and see that the base of the ring matches the Ruger receiver scope base precisely. Directly incorporate the famous Warne Alignment, Rigidity, and Strength into your Ruger scope mounting system... No special adaptors nor other complications needed! Warne's superior alignment results in less scope tension and better shooting accuracy. Warne's stiffness or rigidity protects your scope while it enhances the accuracy of your shooting. And Warne's mounting strength is simply part of the design... With four screws, extra wide surface area, and a close fitting steel recoil key that fits like a glove. See Bases for other firearms and Weaver compatible rings at our Warne Home Page. Sold in Pairs, Price is for Two Rings - Height from top of base to bottom of scope tube.