Leupold 3/8-inch gloss rimfire ringmounts 57405 - Leupold RM Rimfire No Tap Rings

these ringmounts live up to leupolds standard of excellence. They are made of steel and are very strong.I have these on two 22-rimfire rifles and have never lost zero because of these rings. They are rock solid and have had my rifle fall out of my Polaris Ranger on a corner at high speed and the rings held the scope on the rifle where I think other rings would have failed.