UTG 4-16X44 30mm Compact Scope, AO, 36-color Mil-dot, Rings 30mm tube with best in class multi Emerald coated lenses to achieve maximum light transmission for best clarity Built on true strength platform, completely sealed and Nitrogen filled, shockproof, Fogproof and rainproof 1-Click high-tech Illumination memory feature gets you right back to the color/brightness setting last used