Crimson Trace LG639G Lasergrips 5mW Green Laser with 532nM Wavelength & 50 ft Range Black Finish for Glock 25 Gen3, Glock 19 Gen3-5 Glock 23, 32 Gen3-4

This lasergrip is a rear-activated laser sight and features Crimson Trace's famous Instinctive Activation, which allows the laser to be activated with a normal firing grip. It utilizes a master on/off switch for completely powering down the unit. User-installed in moments by attaching securely to the gun frame, these laser sights are fully adjustable for windage and elevation. Provides 4 hours of run time with (2) included 2032 lithium batteries.