3 MOA Green Dot22x26 mm viewing windowRMR Mounting Footprint Auto shut off and INSTANT- ONA(R) technologyHigh grade aluminum alloy body, lightest in its classDesigned from the ground up to ensure clarity, solid function, and rapid target acquisitionDesigned to fit full size handguns, shotguns, and riflesWith 2 night vision brightness settings, the RFX35 is the perfect optic for your pistol in any light conditionsTested in the harshest conditions to ensure your optic will be ready whenever you need it8 Visible & 2 Night Vision Brightness Settings