The Docter Quick Sight offers supreme quality in a small red dot sight. Its revolutionary design allows it to be the flattest and smallest reflex sight. The fusion of different optical components to one compact, effective unit guarantees an absolutely undistorted view. It has been built to work in conjunction with shotguns, specifically ones with ventilated rails. It sits a mere 8.5mm above the barrel rail and is parallax-free. All of these features come together to create a reflex sight that you know will hit its mark when the red dot is placed on the target.