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.

Power Switch: On/Off
Wavelength: 635 nm
Dot Size: .75" @ 25 yds
Power: 5mW
Range: 20yds
Weight: 3.75 oz
Battery: 393 (3)
Laser Color: Red
Firearm Fit: Glock 17 Gen5
Adjustments: No
Finish: Black
Mount Type: Guide Rod