The RAD Pro Open Reflex Sight by Crimson Trace delivers fast and intuitive aiming on compact and full-sized handguns, and comes packed with user friendly features. This red dot sight utilizes a precise 3 MOA reticle, and is equipped with an ambient light sensor to adjust the brightness based on surrounding light levels. The RAD Pro also features shake-to-wake technology, which activates the sight when movement is detected so it will always be at the ready. In addition, the RAD Pro is outfitted with a textured finish to assist in cocking the slide. Features of the Crimson Trace RAD Pro3 MOA reticleAmbient light sensorShake-to-wake technologyTextured finish Crimson Trace RAD Pro Red LED Illuminated Reticle Open Reflex Sight 01-01940