This Tactical Red-Dot Sight offers all the award-winning features of TruGlo's traditional Red Dot sights with a new dual-color reticle designed specifically for tactical firearms. The dual-color (red and green) illuminated reticle offers faster target acquisition in low-light conditions. Nitrogen gas-filled design for waterproof and fog-proof operation. Generous 4" eye relief. Fully-coated lenses provide maximum brightness, clarity and contrast. Adjustable rheostat for brightness control. Rubber eye-guard. Fingertip windage and elevation adjustment. Durable leaf-spring for windage and elevation adjustments. One-piece tube made of aircraft quality aluminum. Durable, scratch-resistant, non-reflective matte finish.