The LG-325 Lasergrips fit all small and large frame Charter Arms revolvers to date and feature our comfortable rubber overmolded material for improved grip control. The instinctive front-activation switch instantly projects the bright red dot onto your target when you take your natural grip on the gun; eliminating potential for error when you need to be at your best. – Platform Lasergrips® – Material Rubber – 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 – Wrench Size 0.05 – 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′