The Trijicon MRO-C-2200333 MRO SD is a sealed reflex sight for rifles, carbines, and shotguns. Its 2 MOA green dot, large aperture, and tapered light path enable rapid target acquisition and situational awareness.The re-engineered objective lens improves optical performance and magnifier compatibility. Ambidextrous controls, advanced coatings, and sub-flush adjusters support efficient operation. Its waterproof, hard-anodized 7075-T6 housing and revised elevation and windage adjusters help maintain zero through recoil and impact.1/2 MOA adjustment per click2 MOA green dotLower 1/3 co-witness mount includedBuilt for aiming performance in demanding field conditions, with included co-witness mounting for rapid deployment.