The CT RAD Micro Pro (Rapid Aiming Dot) Electronic Sight is an ultra-compact Open Reflex Sight for compact and subcompact pistols. Featuring a green 5 MOA aiming dot; recessed and fully multi-coated lens; Ambient Light Sensor that automatically adjusts the aiming dots brightness to the surrounding lighting condition; MOTION Sensor detects movement of the firearm and automatically turns the reflex sight on; powers off after 2 minutes of zero movement. The Micro is easily installed on an optics cut slide using the CT micro footprint that is also compatible with the Shield RMS and JPoint footprints. The Micro has a rear sight notch cut into the back to line up with your front iron sight.