The Trijicon Miniature Rifle Optic (MRO®) is a reflex-style, sealed sight intended for use on rifles, carbines, and shotguns to provide fast target acquisition. It’s designed for use with both eyes open, providing the operator with maximum situational awareness. The large aperture and tapered light path maximizes the viewing area in this type of small optic, taking into consideration fast target engagement – especially from non-standard shooting positions. Advanced lens coatings and electronics produce a crisp red dot. The brightness keep an eye on dial on the MRO is specifically designed for ambidextrous usage. With a mid-adjustment “off” position and eight discernible brightness settings, this brightness dial allows for quick and ergonomic adjustments. The MRO features fully secure adjusters that handle zero even all the way through rough handling, and can also be adjusted without the need for special tools. Hard-anodized, forged 7075-T6 housing is fully sealed and waterproof, providing durability in demanding conditions.