Sig Sauer SOR31002 Romeo 3 Miniature Reflex Sight with Riser 1x25mm 3 MOA Red Dot Reticle Graphite Activated through motion sensing technology, MOTAC immediately powers up illumination when it senses motion and powers down when it does not in order to extend battery life Highly efficient, ultra-wide broadband, anti-reflection lens coatings reduce surface reflections to extremely low levels across the entire visible spectrum providing superior light transmission Electro-Optics industrial design inspired by our legendary firearms; deflection armor trapezoidal surfacing breaks up the shape and visibility of the optic along with pistol slide serrations and grip checkering to add function to the form of all SIG SAUER 3 MOA Red Dot Elevation/Windage Adjustments : 100 MOA