This is a Crimson Trace Corporation Laserguard, model LG-443.
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.
Features:
Front activation
Red laser
Factory sighted at 50Ft
.5 inch diameter at 50 feet
