Compact LED red dot sight provides fast, both-eyes-open sighting without concern for parallax – simply place the dot on the target, and pull the trigger for accurate short- to mid-range shots. The one-piece aluminum chassis is waterproof and shockproof to withstand the recoil of pistols, rifles, and shotguns. Wide-Field glass lens that delivers excellent edge-to-edge brightness for an extremely clear sight picture. Ultra-hard, scratch-resistant coating protects the highly-polished, anti-reflective lens. High-intensity, unlimited-eye-relief center dot –available in 3 MOA or 6 MOA dot sizes – features 10 brightness-intensity settings that enable use in any lighting conditions. Comes with a built-in mount for MIL-STD 1913 Picatinny rail installation; handgun slide mounts sold separately.