Laser collimator with a cartridge made of stainless steel and brass, easy to use. Automatic activation by closing the shutter, calibration distance from 25 m to 500 m. Power supply with three type 393 batteries included. Output power less than 1 Mw, class 2 according to CEI EN 60825, free sale. It is important not to shoot with the laser inserted in the barrel. Gross weight: 50 grams.