Ultimate Arms Gear Pro 3x30 Pechan Prism Sniper Dual Red Green Illuminated Etched Reticle Rifle Shotgun Scope w/Integral Weaver-Picatinny Rail Mounting Base & 3 Built In Accessory Magnification 3x Fixed Crystal Clear 30mm Anti Reflective Coated Lens . Full Windage And Elevation Click Adjustments 5 Adjustable Illumination Settings In Either Red Or Green . Even when powered off or with no battery inside it is fully functional as a non illuminating reticle. Perfect For Rifles, Pistols, Shotguns, Paintball, Airsoft Or Crossbows Equipped With a 7/8" Weaver-Picatinny Rail Fully Coated For Heavy Duty Recoil, Nitrogen Filled, Shockproof, Fogproof, and Water Proof