The Crimson Trace LG-350 Lasergrips provide enhanced laser sighting for Smith & Wesson J-Frame Round Butt revolvers with exceptional comfort and accuracy. Featuring a red laser with front activation button and 4+ hour battery life from dual 2032 lithium batteries.Crimson Trace LG-350 Lasergrips for S&W J-Frame Round ButtRed laser with pressure activationFactory sighted at 50 feet with 0.5 inch diameterRubber wraparound design for enhanced gripShockStop anti-vibration system reduces recoilUser-adjustable windage and elevationEasy installation - replaces factory gripsOver 4 hours of battery life (2x 2032 batteries)Perfect for concealed carry and personal defense applications these laser grips combine precision targeting with improved shooter comfort and reduced recoil for enhanced accuracy.