Designed specifically for use in Beretta 92 and 96, M9, M9A1, M9A3 and Taurus PT92, PT99, PT100, and PT101 pistols, the LMS-1441G replaces the factory spring guide assembly with a high intensity green laser sighting system for advanced target acquisition. Easily user installed without the need for gun smithing or special tools. This Guide Rod Laser is for full size pistol only. Features: 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 Guaranteed alignment ensures center of mass shots