ADE Advanced Optics Advanced Optics Reflex Green Dot Sight w/Colt 1911 Mount Plate 1x 4 MOA Black. During this period Ade Advanced Optics began receiving requests from numerous customers for access to the affordable high quality products that Ade Advanced Optics was capable of producing. By soliciting feedback from both clients and end users in 2010 Ade Advanced Optics was able to overcome the challenges a new company often faces when entering a global market and industry especially one as competitive as the shooting hunting and outdoors industry. Specifications for ADE Advanced Optics Advanced Optics RD3-006 1x Reflex Green Dot Sight w/Colt 1911 Mount Plate: Manufacturer: ADE Advanced Optics Color: Black Magnification: 1 x Objective Lens Diameter: 16.5 - 26.4 mm Reticle: 4 MOA Illumination Color: Green Eye Relief: Unlimited Adjustment Click Value: 1 MOA Emitter Type: Open Battery Type: Lithium Metal CR2032 Weight: 1 oz Red Dot Sights-Footprint: Docter Features of ADE Advanced Optics Advanced Optics RD3-006 1x Reflex Green Dot Sight w/Colt 1911 Mount Plate 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 sightanother is Novak/Adjustable rear sight.This listing is for the Colt Standard Rear Sight. The ADE RD3-006 has been upgraded with several enhancements to improve functionality and user experience. The rear locking screws have been removed and replaced with a self-locking mechanism for easier use and greater reliability. Additionally the new motion-activated technology puts the green dot illumination into sleep mode after five minutes of inactivity instantly reactivating it at the previous brightness setting when motion or vibration is detected ensuring seamless operation and improv The on/off switch is located at the front of the sight it is so much easier to press than the Red dots has the switches on the side. It is rain resistant but not waterproof. Lenses are precision ground and Polished to exacting geometries to virtually eliminate Parallax and to provide a very clear crisp sight picture Powered by a lithium CR2032 battery Package Contents: ADE Advanced Optics Advanced Optics RD3-006 1x Reflex Green Dot Sight w/Colt 1911 Mount Plate Tools Instructions CR2032 Battery ADE Advanced Optics RD3-006+B1: Advanced Optics RD3-006 Reflex Green Dot Sight w/Colt 1911 Mount Plate 1x 4 MOA Black