Give your handgun an instant tactical upgrade with the Viridian® R5-R Shield Red Laser Sight! This topnotch accuracy upgrade Red Laser Sight shows you where to aim with lethal precision. It integrates seamlessly into the trigger guard of your Smith & Wesson to put you on target fast and with maximum accuracy. Plus, it includes a sleek instant-onTM ECRTM holster that activates the laser when drawn. No fumbling with buttons in critical situations... when you draw, it's on.