The LG-404 LaserGrips are the flagship model in our line-up for the 1911 Officer’s Compact and Defender sizes and feature rugged hard polymer side-panels with a rubber overmolded front-activation button. These are the recommended Lasergrips for the most avid 1911 shooters. – Platform Lasergrips® – Material Polymer – Attachment Grip Replacement – Activation Location Front Activation – Sighting Factory Sighted at 50′ – Master On/Off Switch Yes – Battery Type Two #2032 Lithium 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 Polymer Grip with Rubber Overmold Activation Pad – Installation User Installed – Warranty Three Year Full Warranty – Color Black – Dot Size Approx. 0.50 at 50′