Crimson Trace LG-305 Lasergrips S&W J-Frame Round Butt Laser Sight - Red - The LG-305 Lasergrips laser sight for the wildly popular Smith & Wesson J-Frame (round butt) revolver line features an extended grip length over the LG-405. Featuring a front activated laser that is engaged instinctively when the revolver is held in a natural shooting grip, the LG-305 is manufactured with a rubber overmold material over a polymer base and is among the most popular Crimson Trace Lasergrips applications. Beam Intensity: 5mW Peak, 633nm, Class 3R Red Laser; Black Rubber Overmold Grip Replacement; Dot Size: Approximately 0.5in At 50ft; Front Instinctive Activation; Extended Comfort Grip;