How to Install Sights on a Glock
Woody's answers are based on published federal and state law. Not legal advice. Consult a licensed attorney for your specific situation.
Glock sights install via dovetail cuts on the slide. Rear sights drift out laterally, front sights typically require a sight tool or punch. Professional installation recommended for precise windage adjustment.
What This Means for Your Setup
Sight installation on Glocks is more involved than many realize due to tight tolerances in the dovetail cuts. The factory sights are pressed in firmly and require proper tools to avoid damaging the slide finish or sight components. Getting the windage correct during installation affects your zero and requires methodical measurement.
The Detail
Glock pistols use dovetail sight systems with the rear sight drifting left to right in a machined groove on the slide. The front sight sits in a similar dovetail cut but is often secured more tightly than the rear. You'll need a sight pusher tool or brass punches to avoid marring the slide finish. Never use steel punches directly on the sights as this can damage both the sight and slide.
The rear sight removal process involves supporting the slide properly and applying steady pressure to drift the sight out. Most Glock rear sights move from right to left for removal, though this varies by model and sight manufacturer. The dovetail cut has specific angles that require the sight to move straight laterally without tilting. If you feel excessive resistance, stop and verify your approach rather than forcing it.
Front sight removal typically requires more force than the rear due to thread locker compounds or tighter tolerances. Some front sights have small set screws underneath that must be loosened first. Heat from a hair dryer can help soften thread locker if present. The key is maintaining steady, even pressure while supporting the slide to prevent flexing.
Installation reverses the process but requires attention to windage alignment. The rear sight should be centered in the dovetail as a starting point, then adjusted based on your shooting results. Most shooters need fine adjustments after initial installation. Thread locker on front sights helps prevent loosening from recoil forces.
Build Impact
Sight installation requires specialized tools that cost more than paying a gunsmith for simple swaps. If you're building multiple Glocks or plan frequent sight changes, investing in a quality sight pusher makes sense for long term projects.