Lasergrips are designed to fit Ruger LCR/X revolvers by simply replacing the factory grips. This laser sight features Crimson Trace's famed Instinctive Activation, 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. Trigger Guard Attachment Polymer Housing with Rubber Overmold Activation Pad User Installed Laser Battery Life - Over Four Hours Pressure Activated 5mW Red Laser Factory Sighted at 50' User Adjustable Windage and Elevation Approximately .50" at 50" Dot Size Three Year Full Warranty