Crimson Trace Corporation Laserguard Pro, Laser and Light, Fits S&W Shield, Black Finish, 150 Lumen LED, Red Laser, User Installed, Instinctive Activation, 4 Modes 01-5600-1 LL-801 Laserguard(R) Pro(TM) 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(TM)" which activates the unit with a normal firing grip. LL-801 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 hours of battery life.