LaserMax LMSG517 Guide Rod Laser 5mW Red Laser with 635nM Wavelength & Made of Aluminum for Glock 17 17 MOS 34 MOS Gen5

LaserMax Guide Rod Laser meets 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 pulsating red lasers install as the internal guide rod as close to the bore as possible for a close point of aim/point of impact relationship. Factory aligned for center-of-mass accuracy at 20 yards they never need realignment even after changing batteries. The ambidextrous on/off switch is located in the custom take-down lever for deliberate activation.