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 is designed to be used with both eyes open, providing the operator with maximum situational awareness. The large aperture and tapered light path maximizes the viewing area in such a small optic, allowing for fast target engagement especially from non-standard shooting positions. Advanced lens coatings and electronics produce a crisp red dot. The brightness control 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 adjustmentsINCLUDESOcular CapObjective Cap ARD1/3 Co-Witness Quick Release Mount (AC32071)Trijicon Logo Sticker (PR15)Lens ClothManualWarranty CardMRO Mount GuideFASTER TARGET ACQUISITIONLarger viewing area allows for faster acquisition and engagement with reduced tube effect.AMBIDEXTROUS BRIGHTNESS CONTROLBrightness dial is equally usable by left- or right-handed operators without having to remove hand from fire control.EASILY ADJUSTABLE BRIGHTNESS SETTINGSMRO models feature 8brightness settings, including 2 night vision-compatible settings.MRO HD models feature16 brightness settings, including 4 night vision-compatible settings.BUILT TO HANDLE THE WORSTDesigned with forged 7075 housing, fully sealed construction and dry nitrogen to protect against the tough elements.MAINTAINS ZEROCapless design (utilizing sub-flush adjusters) eliminates lost caps, snag hazards and ensures against inadvertent adjustment or loss of zero.SUPERIOR QUALITY GLASS LENSESMulti-coated lenses provide superior clarity and light-gathering capabilities with zero distortion for a crisp dot reticle.LONG-LASTING POWERMRO Red Dot: 5 yearsMRO Green Dot: 1 yearMRO HD: 2.5 years for dot only, 75 days for complex reticle(continuous use at setting 5 of 8)LIMITED LIFETIME WARRANTYElectronics are warrantied for 5 years from date of original manufacture.Length x Width x Height:4.1 in x 1.8 in x 2.0 in(104.14mm x 45.72mm x 50.8mm)Weight:5.1 oz. (144.58g)Magnification:1xObjective Size:25mmReticle Pattern:2.0 MOA DotDay Reticle Color:RedNight Reticle Color:RedBindon Aiming Concept (BAC):NoIllumination Source:LEDIllumination Settings:8Power Source:1 CR2032 Lithium BatteryBattery Life:5 years of continuous use at day setting 3″ (setting 5 of 8) at F (21C)Adjustment:1/2 MOA Per ClickAdjustment Range:70 MOA Total TravelEye Relief:Infinite in.Mount:1/3 Co-Witness Quick Release MountHousing Material:7075-T6 forged aluminumFinish:Matte BlackSubmersion Depth:100 ft. (30m)