Laserguard Pro for Smith & Wesson M&P Shield 9mm & .40 S&W is a powerful red laser sight and 150 Lumen LED white light in a single compact unit. Designed specifically for the M&P Shield platform this illumination and targeting product is activated with Crimson Trace's famed Instinctive Activation which activates the unit with a normal firing grip. It features four modes of operation: Laser + Light Laser Only Light Only and Laser + Light Strobe. The unit features a Master On/Off Switch is completely user-installed in moments is adjustable for windage and elevation and offers 2 hours of battery life. Laser Output: 5mW Red Laser Laser Visibility: Approximately .5" Diameter at 50 Feet Factory Sighted at 50' Three Year Full Warranty Wrench Size: .05