Professional reflex sight allows is made entirely of metal, made in China. The collimator can be mounted on each rail with a width of 20 - 22 mm RIS. Adjustable two-level laser beam is directed onto a mirror. We can choose from four types of points sights, the intensity of each wheel is controlled. The backlight can be green or red. Comes with a rubber coating of the mirror. Calibration points sights horizontally and vertically using the Allen screw. Collimator powered by one CR 2032 battery contained in the set.