LL-801G Green Laser guard Pro for Smith & Wesson M&P Shield 9mm & .40 S&W is a powerful green laser sight and 150 lm 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. LL-801G offers 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 hr of battery life.Features:Trigger guard attachmentWindage and elevation adjustableMaster on/off switch