Crimson Trace LG-185 Lasergrips Red Laser Sight Grips for Taurus Small Frame Revolvers POWERFUL RED LASER: Features a 5mW peak, 620-670nm, Class 3R visible red laser - the brighest beam allowed by law. INSTINCTIVE ACTIVATION: Front activation button engages the laser immediately when the firearm is held in a normal firing grip. This is the feature that sets Crimson Trace apart from the rest. OVER FOUR HOURS OF BATTERY LIFE: Powered by two #2032 Batteries (included). This product is eligible for Crimson Traces Free Batteries For Life Program. FITS Taurus models 17*, 85, 94, 327 six-shot, 605, 650, 651, 731, 850, 905 and 941. Does not fit Public Defender. Does not fit Polymer frame models. *Except Tracker. Does not fit 85 2015-Up EASY INSTALLATION: User installed- no gunsmithing required. Factory sighted at 50 feet, but is fully user adjustable for Windage and Elevation with provided tool.