Designed from the ground up to ensure clarity, solid function, and rapid target acquisition. Fits compact, optics-ready pistols that use the Shield RMSc mounting footprint, as well as shotguns and rifles with Picatinny rails. With 2 night vision brightness settings, the sight is the perfect optic for your pistol in any light condition. Tested in the harshest conditions to ensure your optic will be ready whenever you need it Specifications for Viridian OPMOD Omega Compact Green Dot Reflex Sight: Manufacturer: OPMOD Color: Black Fabric/Material: 6061-T6 Aluminum Magnification: 1 x Objective Lens Diameter: 17 - 24 mm Objective Window Size: 17 x 24 mm Reticle: 3 MOA Dot Illumination Color: Green Brightness Settings: 10 Eye Relief: Unlimited Adjustment Click Value: 1 MOA Emitter Type: Open Battery Type: CR2032 Battery Life: 30000 hours Operating Temperature: -4 - 130 Fahrenheit Water Resistance Level: IPX-6 Length: 1.61 in Width: 0.98 in Height: 0.96 in Weight: 0.65 oz Quantity: 1 Red Dot Sights-Footprint: RMS Features of Viridian OPMOD Omega Compact Green Dot Reflex Sight Auto shut off and INSTANT- ON technology High grade aluminum alloy body, lightest in its class Designed from the ground up to ensure clarity, solid function, and rapid target acquisition Fits most subcompact, optics ready pistols that use the Shield Standard footprint With 2 night vision brightness settings, the sight is the perfect optic for your pistol in any light condition Tested in the harshest conditions to ensure your optic will be ready whenever you need it 8 visible and 2 night vision brightness settings Integral rear sight notch Package Contents: Viridian OPMOD Omega Compact Green Dot Reflex Sight Picatinny Mount Shield Footprint