The GMG Red & Green Tactical Reflex Rifle Sight GM-RGRS is great for rifles, shotguns or any gun with a Picatinny rail. This Red Dot Weapon Sight from the experts at Global Military Gear is made with 4 reticle patterns (dot, dot in circle, dot in crosshairs, dot in circle and crosshairs) in both red and green, making it perfect for night and daytime use. Shockproof, fogproof, highly water resistant, the G.M.G. Reflex Tactical Red and Green Dot Rifle Sight is perfect for any environment. This GMG Red Dot Sight has multi-coated lenses and unlimited eye relief that is ideal for users with spectacles or shooting glasses. The Global Military Reflex Tactical Firearm Sight comes with thermoplastic lens cover, CR2032 lithium battery and lens cleaning kit.