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 MRO SD maintains the same durability and footprint of the original MRO with an enhanced optical design for pairing with magnifiers and night vision devices.

The MRO SD features a reengineered objective lens with advanced lens coatings that delivers a refined, crisp 2.0 MOA center dot, optimized for seamless use with the optional MRO 3x Magnifier. The MRO SD is also equipped with upgraded windage and elevation adjusters for improved zero retention under direct impact and heavy recoil, ambidextrous brightness controls, and a fully sealed, waterproof, hard-anodized forged 7075-T6 housing.