Trijicon MRO SD 1x25mm 2 MOA Red Dot Sight - Lower 1/3 Co-Witness Mount

The Trijicon MRO SD (Miniature Rifle Optic - Sealed) is a 1x25mm reflex-style red dot sight built for rifles, carbines, and shotguns. A fully sealed, hard anodized housing protects the optic from dust and moisture, while a reengineered objective lens with advanced coatings delivers a refined, crisp aiming point for fast, intuitive target acquisition.

This variant ships with a dedicated lower 1/3 co-witness mount, allowing a fixed back-up iron sight to sit in the lower portion of the window while the red dot rides at the proper height. The MRO SD uses the standard MRO footprint for broad mounting compatibility and offers infinite eye relief with a wide, unobstructed field of view.

A single CR2032 battery powers the unit, and ambidextrous brightness controls deliver two night vision settings and five daylight settings. Sub-flush adjusters resist snags and accidental clicks, with a click value of .50 MOA. The black housing is rated waterproof to 100 feet and built to hold zero under hard use.

At just 2.90 in long and 4.8 oz, the MRO SD keeps your rifle's profile compact without sacrificing optical performance - a rugged, American-made 2 MOA red dot ready for duty, defense, and competition alike.