The LG-489 is a seamlessly integrated laser sight for Smith & Wesson's M&P Shield 9mm & .40 S&W concealed carry pistol. This Laserguard is designed to match the unique design of the pistol, and features our patented Instinctive Activation - meaning the laser is activated when the gun is held in a natural firing grip. Quickly installed with no gunsmithing required, the LG-489 is also fully adjustable for windage and elevation..