Crimson Trace Corporation, Laserguard Pro, Laser and Light, Fits Glock 42 and 43, Black Finish, 150 Lumen LED, Red Laser, User Installed, Instinctive Activation, 4 Modes WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov. Front activation Red laser Factory sighted at 50Ft .5 inch diameter at 50 feet LL-803 Laserguard(R) Pro for GLOCK(R) GLOCK(R) G42, G43, G43X and G48 is a powerful red laser sight and 150 Lumen LED white light in a single compact unit. Designed specifically for these compact platforms, 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, and is adjustable for windage and elevation.