Leupold® steel Standard (STD) rings and bases are the most versatile of any mounting system we offer. This specific model contains the WINDAGE BASE ONLY and is designed to be machined to fit the firearm of your choice. You can pair the Gunmakers windage base with the Gunmakers front dovetail base (50034) to complete your build. It is the perfect choice for standard calibers less than .300 Win. Mag. STD rings come in five different heights and are precision engineered to match up with STD 1-piece
