Crimson Trace Corporation, Laserguard, Red Laser, For Glock 42 and 43, Black Finish WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov. Front activation Red laser Factory sighted at 50Ft .5 inch diameter at 50 feet The LG-443 fits GLOCK's(R) slimline G42, G43, G43X and G48 by securing firmly around the trigger guard. The Laserguard(R) features Instinctive Activation(TM), which allows the user to activate the laser sight by simply gripping the pistol in a normal firing grip. User-installed in moments, the LG-443 is also fully user-adjustable for windage and elevation and offers more than four hours of battery life.