Lasermax Inc. LMS-1141G

LaserMax Green Glock Guide Rod Laser (For Gen 1-3 Model 17, 22, 31, 37)
Weight - .76 oz
Accuracy - Within 1" POI at 10yds
Battery Life - 1hr

Designed specifically for use in Glock 17, 22, 31, and 37 pistols, the LMS-1141G replaces Glock's factory spring guide assembly with a high intensity green laser sighting system for advanced target acquisition. Easily user installed without the need for gunsmithing or special tools, the Guide Rod Laser is constructed with rugged, precision components including aircraft-grade aluminum and genuine Wolff springs.
Features:
Pulses for superior visibility and faster identification
Internal design does not restrict grip or holster selection
Distinct ambidextrous ON/OFF switch reinforces safe firearm handling
Proximity to the bore provides maximum POA/POI accuracy
Guaranteed alignment ensures center of mass shots
Also available in red and infrared
Five year warranty