LL-803 Laserguard Pro for GLOCK 42 and 43 is a powerful red laser sight and 150 Lumen LED white light in a single compact unit. Designed specifically for the 42 and 43 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-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..