Leupold Dual Dovetail (DD) bases and rings are one of our strongest mount systems, designed for standard to magnum caliber rifles with high recoils. This specific ring model fits any riflescope with a 30mm maintube and is meant to be paired with our Dual Dovetail bases. It is especially popular for handguns and large caliber rifles. Our steel DD rings use a twist-and-lock action to ensure a strong connection with 1-piece or 2-piece DD bases, while the dovetail feature on the front and back of the mount allow for a precise sight-in.