The Crimson Trace Lasergrips platform is a decisive tactical advantage for handguns and changes the way gun owners approach personal protection. It offers immediate targeting laser beam when you hold your gun in a natural firing grip. The Instinctive Activation, saves precious time when seconds count. The Lasergrips features a master on/off switch, are easily user-installed with zero modification to your firearm and are completely user-adjustable for windage and elevation. *Note- fits Taurus Models 17, 85, 94, 327 Six-Shot, 605, 650, 651, 731, 850, 856, 905 and 941. Does not fit Public Defender or polymer frame models except the Tracker, does not fit Taurus “Compact 5 Shot revolver (85,94, 605, 650, 731, 905 and 941) manufactured after 2014.