Crimson Trace Corporation, Green Lasergaurd, Fits S&W Shield, User Installed, Black Finish WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov. Front activation Green laser Factory sighted at 50Ft .5 inch diameter at 50 feet The LG-489G is a seamlessly integrated green laser sight for Smith & Wesson's M&P Shield 9mm and .40 S&W concealed carry pistol. This Laserguard(R) is designed to match the unique design of the pistol, and features Instinctive Activation(TM) - meaning the laser is activated when the gun is held in a natural firing grip. Quickly installed with no gunsmithing required, the LG-489G is also fully adjustable for windage and elevation. Features a powerful green laser diode for improved laser targeting in all lighting conditions.