Burris Xtreme Tactical Rings were built to withstand brutal use from competitors and tactical operators. They are lightweight, have plenty of holding power, and can endure any amount of recoil. Fits on most Weaver and all Picatinny-style mounts Available in a variety of sizes Ideal for tactical use Also great for hunting rifles, slug guns, and muzzleloaders 1-in. and 30 mm models are made of aluminum for optimum weight savings Quick-detach models available 1/2-in. Picatinny Risers are available for extra height and better sight alignment