Trijicon MRO SD, Red Dot, 25mm Objective, 2 MOA Dot, Anodized Finish, Coyote Brown, No Mount Included MRO-C-2200325 The Trijicon MRO (Miniature Rifle Optic) SD is a sealed, miniature reflex sight intended for use on rifles, carbines, and shotguns to provide fast target acquisition. The large aperture and tapered light path maximize the viewing area and allow for better situational awareness and fast target engagement. Combine all this with the ambidextrous brightness controls, sub-flush adjusters, advanced lens coatings and the fully sealed, waterproof, hard anodized forged 7075-T6 housing, and you have the ultimate mini reflex sight on the market. The MRO SD features a re-engineered objective lens allowing for enhanced optical performance and magnifier compatibility. The MRO SD is also equipped with improved windage and elevation adjusters designed to maintain stricter zero retention requirements under drop and recoil.