Lsrmx LMS1141P Glk 17/22/31/37 Red 635nm .75"@25yds 20yds Range High Capacity

LaserMax Guide Rod Lasers meet or exceeds both Mil-Spec and Homeland Security durability test standards (drop tests/blowing sand/temperature and humidity extremes/salt water/fog/deep water immersion/20,000+ rounds live fire). It has an on/off switch on the takedown lever. No gunsmithing required to install. These models fit Glock pistols and have a red or a green laser.