LG-415G Green Lasergrips(R) are designed to fit Ruger LCR and LCRx revolvers by simply replacing the factory grips. This green laser sight features Crimson Traces famed Instinctive Activation(TM), which activates the laser when the firearm is held in a natural firing grip. Laser activation button is located in the front, and the unit includes a Master On/Off Switch for completely powering down the unit. With battery life of over two hours and fully adjustable for windage and elevation, the LG-415G is quickly user-installed in moments with zero alterations to the firearm.Features : Pressure activation Green laser Factory sighted at 50Ft .5 inch diameter at 50 feet