The LG-457 Laserguard is a precision-engineered red laser sight created for the Smith & Wesson SD and SD VE series in 9mm and .40 SW. It incorporates Crimson Trace's renowned Instinctive Activation which activates the laser with a natural grip on the pistol. Installation is simple and requires no alterations to the firearm offering seamless integration. This laser sight is fully adjustable for windage and elevation providing precise targeting. With a runtime of four hours on the included battery the Laserguard ensures reliable performance when you need it most.