AIM-O Multi Reticle Reflex Red/Green Dot Sight (BK)

Details

Head-Up, both eyes open aiming for greater target ID. 
Multi Reticle Reflex Red Dot Sight for handguns/ Pistol, Rifles, SMG, Shotguns and Bows. 
Tubeless design eliminates blind spots and tunnel vision effect that you get with tubed sights. 
35mm reflex lens aperture provides a wide field of view, suitable for rapid-fire, moving target besides normal shooting. 
4 interchangeable reticle shapes in a single sight, just turn a small knot and get a new 
5 Levels Brightness Control for each Illuminated Dot (Red/ Green) 
Change reticle quickly and easily by turning the reticle knob, however the point of impact won't change. 
Parallax corrected with unlimited eye-relief. 
Allen head screw type windage and elevation click adjustments, with locking screw. 
No need to rezero when remounting the discounted sight 
Comes with built-in mount for standard 20mm Weaver bases. 
Very lightweight, weatherproof & shockproof 
Runs on one widely available 3V lithium CR2032 battery (included) 
Low power consumption for Long Battery Life