The LG-306 LaserGrips feature a comfortable rubber grip surface and a slimmed down profile making them ideally suited for concealed carry. - Platform Lasergrips� - Material Polymer and Rubber Combination - Attachment Grip Replacement - Activation Location Front Activation - Sighting Factory Sighted at 50' - Master On/Off Switch Yes - Battery Type Two #2032 Batteries - Laser Battery Life Over Four Hours - Laser Output 5mW Red Laser - Activation Mode Pressure Activated - Laser Visibility Approx .5 Inch Diameter at 50 Feet - Wrench Size 0.028 - User Adjustable Windage and Elevation - Finish Rubber Overmold Grip - Installation User Installed - Warranty Three Year Full Warranty - Color Black - Dot Size Approx. 0.50 at 50'