Crimson Trace Defender Series Laser Grip for Smith and Wesson J Frame Revolvers. Front Activation. The hard polymer surface that is both rugged and well suited for personal defense. The smooth polymer material provides for snag free draws and is hard enough to meet strict standards for durability and reliability. Fits Models: Airlite, Airweight, Bodyguard, Chiefs 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 with round butt J Frame. Crimson Trace LG105P Laser Grip Pistol Sight for Smith and Wesson J Frame Specifications: Activation: Instinctive Activation; Front Material: Hard Polymer User Adjustable: Both Windage and Elevation Warranty: 3 Years Complete Beam Intensity: 5mw peak, 633nm, class IIIa laser. Maximum output that federal law and technology allow Dot Size: Approximately 0.5 inch diameter at 50 feet. Power Source: Two #2032 lithium batteries included; over four hours of on time use and a five year shelf life
