The LG-457 Laserguard is a powerful red laser sight designed specifically for Smith & Wesson SD and SD VE pistols in 9mm and 40 S&W. Featuring Crimson Trace's famed Instinctive Activation, the laser sight springs to life with a normal hold on the pistol. The LG-457 is user-installed in moments with zero modifications to the firearm, and is completely adjustable for both windage and elevation. The Laserguard offers 4 hr of run-time with supplied battery and is eligible for our "free batteries for life" program. Features: Trigger guard attachment Windage and elevation adjustable