Designed for competitive shooters, the SIII 36x45 ED riflescope has all the features of a winning combination. The ED glass objective provides high quality images and superior target definition. The side focus knob will focus from 10 yards to infinity for all kinds of competition and target shooting. The 1/10 MOA adjustable target style knobs with windage and elevation caps are resettable to zero. The scope weighs in at 20.5 oz.