XTR Xtreme Tactical rings were created specifically for the tactical shooter who puts a premium on less weight and plenty of holding power. The massive strength of a 6-screw ring is combined with lightweight yet thick cross-section aluminum, so from smaller carbines to the most powerful magnums, XTR rings will stand up to years of use and recoil. They are also great for hunting rifles, slug guns or muzzleloaders. Rings are available in 4 heights for 30mm and 1 sizes. Xtreme tactical rings work with any Picatinny or Weaver-style base and are ready for the heaviest of scopes, massive recoil, and severe usage. The extra high 1 version is ideal for AR-15/M-16 flattop receivers where scope height is critical.