Sig Sauer Romeo5 compact red dot sight was designed with the AR/MSR platforms in mind. Features:2MOA DotEye Relief: Unlimited8 Daytime Illumination Settings2 Nightvision SettingsElevation Adjustment Range: 40MOAWindage Adjustment Range: 40MOA0.5 MOA AdjustmentsWaterproof up to 1 meterM1913 Picatinny low mount riser and a co-witness 1.41 riser mount includedMOTAC (Motion Activated Illumination) which powers the optic up when it senses motion and powers it down when it doesn't Sig Sauer Romeo5 XDR Red Dot AAA