For use in Glock 19 (Gen4) N/A Imported Pulses for superior visibility and faster identification Internal design does not restrict grip or holster selection Distinct ambidextrous ON/OFF switch reinforces safe firearm handling Proximity to the bore provides maximum POA/POI accuracy Alignment ensures center of mass shots; Class IIIa Laser Product: &lt;5mW power output Class 3R Laser Product (Does not exceed Class IIIA emission limits), 5mW power output