LASER SIGHT LASERGUARD® FOR REMINGTON R-51 the LG-494 Laserguard®. The LG-494 is a trigger guard mounted laser sight for Remington R-51 pistols. The laser is user-installed in moments, securely attaching around the trigger guard. A front activation button engages Crimson Trace's Instinctive Activation™, which allows the laser to activate as the pistol is held in a natural firing grip. Engineered to seamlessly match the frame of the R-51, the LG-494 provides 4 hours of run-time. Laser Sight for Remington R-51 9mm LG-494 Laserguard® for Remington R-51 LG-494 Front activation Laser Technical Specs: Platform Laserguard® Material Polymer Color Black Activation Location Front Activation Attachment Trigger Guard Attachment Batteries For Life Yes Battery Type One 1/3N Lithium or Two 357 Silver Oxide Batteries Finish Polymer Housing with Rubber Overmold Activation Pad Installation User Installed Laser Battery Life Over Four Hours Activation Mode Pressure Activated Sighting Factory Sighted at 50' User Adjustable Windage and Elevation Warranty Three Year Full Warranty Wrench Size 0.05 Dot Size Approx. 0.50" at 50'