Ade Advanced Optics Crusader RD3-009 Red Dot Reflex Sight with Colt 1911 Standard Handgun Mounting Plate That Replace Rear Sight

We have made several improvements since it's initial release in 2016. We have made it more durable to withstand various recoil and improved the ability to hold zero. Designed in Oregon. Comes with mounting plate for Colt 1911 standard and also a standard picatinny mount.There are two types of rear sight on 1911 pistols. One is Colt standard rear sight,another is Novak/Adjustable rear sight.This listing is for the Colt Standard Rear Sight. Please ask your pistol manufacturer which rear sight you have before purchasing. Waterproof/Shock/Fog Resistant. Lenses are precision ground and polished to exacting geometries to virtually eliminate parallax and to provide a very clear, crisp sight picture. Fully windage and elevation adjustable and lockable; Unlimited Eye Relief 5 MOA. 5 Illumination Settings. Powered by a lithium CR2032 battery(Included)