Crimson Trace Smith & Wesson J-Frame Round Butt Compact Grip Red Lasergrips - Black - The LG-405 laser sight is the latest design in Lasergrips for the wildly popular Smith & Wesson J-Frame revolver line. Featuring a front activated laser that is engaged instinctively when the revolver is held in a natural shooting grip, the LG-405 laser sight is manufactured with a rubber overmold material over a polymer base. In addition to the enhanced sighting provided by Crimson Trace Lasergrips, the LG-405 also features an innovative air pocket on top of the backstrap that effectively reduces felt recoil up to 30%. The LG-405 on a J-Frame is ideal for deep concealment. Activation Location: Front Activation Activation Type: Instinctive Activation Attachment: Grip Replacement Beam Intensity: 5MW Peak, 633NM, Class 3R Red Laser Dot Size: Approx. 0.50in At 50ft Smith & Wesson J-Frame Round Butt: Fits Smith & Wesson Airlight, Airweight, Bodyguard (Except Polymer-Framed Models), Chief's Special, Centennial, Ladysmith, Models 36, 37, 38, 49, 60, 63, 317, 331, 332, 337, 340, 342, 351, 360, 442, 637, 638, 640, 642, 649, 651 And 940. Round Butt Only.