Crisp and Vivid Red/Green 4MOA Target Dot and 62MOA Circle with 5 Brightness Settings for Diverse Environmental Background. Instant Aiming and Locking on Target with Great Field of View and Unlimited Eye Relief. Non-Reflection High Tech Emerald Coatings. Optional: Use 1/2″ Riser to Achieve Co-witnessing with Iron Sights on AR Models (UTG 1/2″ Risers Sold Separately). Includes Integral Quick Detach Mounting Deck and Flip-open Lens Caps. Most Versatile Dot Sight for Wide Range of Pistols, Shotguns and Rifles