The Swampfox Freedom Rings II have been refined from the original Freedom Rings to provide a lighter and more efficient mounting solution without compromising durability. Constructed from 7075-T6 aluminum, these rings feature a scratch-resistant hardcoat finish. This specific grade of aluminum and finish is compatible with AR-15 receivers, establishing it as the standard for the Freedom Rings II. These rings are designed to eliminate the need for lapping and include a pre-installed thin, non-slip material to maintain optic alignment during the torquing of ring caps. With our second-generation scope rings, you no longer need to compromise on strength, weight or appearance. Constructed from 7075-T6 aluminum, this material is renowned for its high strength-to-weight ratio, excellent corrosion resistance, and durability A durable, scratch-resistant coating with an oxidized finish designed to protect surfaces from abrasions and maintain a pristine appearance over time This product is a precisely CNC machined paired set, ensuring high accuracy and consistency in performance The T10 star ring cap screws should be tightened to a torque specification of 10 in-lb to ensure proper fastening and optimal performance The screws for the 1913 MIL-STD picatinny base should be tightened to a torque specification of 30 in-lb