The Burris Rimfire and Air gun Rings are designed to be easy to attach to your firearm allowing you to get your scope or accessories on and ready for use. The metal is extra durable providing for a snug and secure fit. The construction of these rings takes into account long hours of use so your scope will not need many adjustments to return-to-zero. Ideal for those who enjoy using their weapon in the field at the range or even competitive shooting.