Laser Sight for S&W Sigma Series by Arma Laser - TR15 Touch-Reflix for SW9VE & SW40VE Smith & Wesson Pistols (Does NOT fit SD9VE or SD40VE - get the Stingray instead) Finest Laser Sight available for the S&W Sigma Pistols Touch Activation: middle finger will always touch the gold-plated touch sensor on the TR Series where the trigger guard ends. NO adapter required - lasersight fits directly onto trigger guard of gun. Arma Lasers are are Ultra-bright Class 3R 635nm &lt;5mW red lasers and are registered with the FDA as a laser manufacturer. 5 YEAR INDUSTRY LEADING WARRANTY! Full control over windage (left to right) and elevation (up and down) adjustments. Extremely bright 5mW, 635nm laser, up to 5 hours run time - 2 years active time - 2 x 357 watch batteries or 1 x CR1/3N