Laserguard Pro compatible with GLOCK Subcompact pistols is a powerful red laser sight and 150 Lumen LED white light in a single compact unit. This illumination and targeting product is activated with Crimson Trace's famed Instinctive Activation, which activates the unit via a front activation button when the pistol is held in a normal firing grip. Features four modes of operation, a Master On/Off Switch, is completely user-installed in moments with no modifications to the gun frame and the laser is user-adjustable for windage and elevation. Offers 2 hours of battery with a single CR2 Lithium battery. *Compatible w/Glock Gen3 26/27/33/36; Gen4 26/27/33; Gen5 26. **Will not fit Glocks with accessory rails.