Crimson Trace LG-457 Laserguard Smith & Wesson SD/SD VE Laser Sight - Red - 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 four (4) hours of run-time with supplied battery and is eligible for Crimson Trace's"Free Batteries For Life" program. Red Laser Sight; Adjustable Laser Sight; Instinctive Activation; 4 Hours Of Battery Life; Three Year Limited Warranty; Eligible For Free Batteries For Life Program; Fits Smith & Wesson SD And SD VE Pistols In 9mm And .40 S&W;