Watch: installing FiberLok™ sights on a Glock (about 1 minute)
One of the Best Upgrades You Can Make to Your Glock
Whether you carry a Glock for personal defense, compete in USPSA or IDPA, or simply enjoy spending time at the range, upgrading your sights is one of the most noticeable improvements you can make.
Factory Glock sights are functional, but many shooters replace them with higher-visibility options that offer faster target acquisition, improved durability, and greater confidence under pressure.
The good news? Installing Glock sights is well within the ability of most shooters with a few basic tools and a little patience. Replacement sights are also one of the most affordable upgrades available for your Glock.
In this guide, we'll walk through the installation process step by step, explain the tools you'll need, highlight common mistakes to avoid, and share a few professional tips we've learned after helping thousands of Glock owners upgrade their pistols.
Why Upgrade Your Glock Sights?
Before diving into installation, it's worth understanding why so many Glock owners make this their first upgrade.
Factory polymer sights are inexpensive to manufacture, but they have several limitations:
- Relatively low visibility
- Can become damaged through hard use
- Limited precision for competition shooting
- Less confidence in varying lighting conditions
A quality fiber optic or tritium sight system offers:
- Faster sight acquisition
- Improved accuracy potential
- Better visibility
- Greater durability
- More confidence in defensive or competition shooting
Many shooters find that upgraded sights make a bigger difference than any other accessory they install.
Tools You'll Need
Installing Glock sights doesn't require a full gunsmith's shop, but having the right tools makes the job easier and helps prevent damage to the slide and the sights.
Required Tools
- Glock front sight tool (3/16" hex)
- Rear sight pusher (recommended)
- Small non-marring hammer (optional)
- Nylon drift punch (if not using a sight pusher)
- Bench block or padded vise
- Blue thread locker (Loctite® 242 or equivalent)
- Cleaning solvent or rubbing alcohol
- Lint-free cloth
Optional Tools
- Digital calipers for centering the rear sight
- Torque driver
- Painter's tape to protect the slide finish
Before You Begin
Safety always comes first.
Before working on your firearm, make sure it is unloaded:
- Remove the magazine.
- Lock the slide to the rear.
- Visually and physically inspect the chamber.
- Verify the pistol is unloaded.
- Remove the slide from the frame.
Working on the slide alone makes installation safer and much easier.
Removing the Factory Front Sight
Most modern Glock pistols use a small hex screw to retain the front sight.
Step 1
Turn the slide upside down. Using the Glock front sight tool, carefully remove the front sight screw. Once removed, lift the factory sight out of the slide.
If the screw has thread locker applied from the factory, apply steady pressure to the wrench rather than forcing it.
Cleaning the Front Sight Mount
Before installing the new sight:
- Remove any oil
- Remove old thread locker
- Wipe the mounting surface clean
A clean mounting surface helps the new sight seat properly and allows the new thread locker to cure correctly.
Installing the New Front Sight
Insert the new front sight into the mounting slot.
TAG Precision sight screws have a factory-applied blue thread locking compound — do not apply additional thread locker.
While holding the sight square in the slot, tighten the screw until snug using 5–7 in-lbs of torque.
Do not overtighten. Excessive torque can strip the screw or damage the sight or slide.
TAG Precision Tip
FiberLok™ front sights are CNC machined for a precise fit. Once properly seated, the sight aligns squarely with the slide and provides an exceptionally secure installation.
Removing the Factory Rear Sight
The rear sight sits in a dovetail and is typically press-fit into the slide. The preferred removal method is with a dedicated sight pusher.
Using a sight pusher:
- Secure the slide.
- Align the pusher.
- Slowly press the rear sight out.
Without a sight pusher, use a non-marring nylon punch and carefully drift the sight out with light hammer taps.
Do not use steel punches, as they will mar the slide and sight finish.
Installing the New Rear Sight
Begin by cleaning the dovetail thoroughly. Some Glock slides may require minor fitting.
A properly fitted sight should begin into the dovetail by hand before requiring gentle pressure to complete installation.
Never force a sight that is obviously oversized.
Once installed:
- Center the sight visually.
- Measure each side using calipers for precision.
- Tighten any set screws according to the manufacturer's recommendations (5–7 in-lbs).
Zeroing Your New Glock Sights
Even precision-machined sights should be confirmed at the range.
Most shooters choose:
- 10 yards
- 15 yards
- 25 yards
Fire several slow, supported groups.
If windage adjustments are necessary:
- Move the rear sight in the direction you want the point of impact to move.
Small adjustments often make a significant difference.
Common Installation Mistakes
Overtightening the Front Sight Screw
More torque isn't better. Tighten only until secure.
Skipping Thread Locker
TAG Precision sight screws are pre-treated with blue thread locker compound. Without blue thread locker, recoil may eventually loosen the screw.
Do Not Use Red (Permanent) Thread Locker
Avoid using permanent thread locker, as future maintenance becomes much more difficult.
Hammering the Rear Sight Excessively
Heavy impacts can damage both the sight and the slide. TAG Precision recommends using a sight pusher.
Forgetting to Verify Zero
Even perfectly installed sights should always be confirmed at the range.
Changing Fiber Colors Is Easier Than You Think
One of the biggest advantages of the TAG Precision FiberLok™ system is that changing fiber colors doesn't require replacing the sight.
Traditional fiber optic sights often require melting fiber ends or using adhesives.
FiberLok's patented retention system allows shooters to:
- Switch between green, red, orange, or yellow fibers
- Replace fibers in minutes
- Adapt to changing lighting conditions
- Experiment with the color that works best for their eyes
It's one of the reasons FiberLok™ has become a favorite among competitive shooters and recreational enthusiasts alike.
Learn how to swap your fiber colors →
When Should You Have a Gunsmith Install Your Sights?
Most Glock owners can install sights themselves. However, professional installation may be worthwhile if:
- You don't own the required tools
- You're uncomfortable drifting sights
- Your rear sight is stuck or the dovetail is damaged
- You're installing on an optic-cut (MOS) slide where a plate or co-witness setup complicates the job — and/or adding a suppressor to the mix
A qualified gunsmith can typically complete the installation in less than 30 minutes.
Why Shooters Choose TAG Precision
Every FiberLok™ sight is designed to make installation and ownership as straightforward as possible.
Our sights feature:
- Patented FiberLok™ retention system
- CNC-machined billet steel construction
- Durable QPQ Nitride finish
- Lifetime guarantee on both sights and fibers
- Proven through 65,000+ rounds of endurance testing
- Manufactured in Dallas, Texas
Whether you're upgrading your everyday carry pistol or building a competition gun, FiberLok™ delivers bright, durable performance designed to last.
Frequently Asked Questions
Can I install Glock sights myself?
Yes. Most Glock owners can install new sights with basic tools, careful attention to detail, and a little patience.
What tool removes Glock front sights?
A Glock front sight tool (3/16-inch hex driver) is specifically designed to remove and install the front sight screw.
Do I need a sight pusher?
While not absolutely required, a quality sight pusher is the safest and easiest way to remove and install Glock rear sights without damaging the slide or sights.
Should I use Loctite on Glock sights?
If you're installing sights with screws that haven't been pre-treated at the factory with thread locker compound (as TAG Precision does), a small amount of blue thread locker is recommended on the front sight screw. Do not use a permanent (red) thread locker. TAG Precision pre-treats set screws with blue thread locker compound.
How long does it take to install Glock sights?
Most first-time installers complete the process in approximately 20–40 minutes. With experience, installation often takes less than 15 minutes.
Can I change FiberLok™ fiber colors myself?
Yes. One of FiberLok's biggest advantages is its patented fiber retention design, allowing fiber colors to be changed quickly without replacing the sight or using heat or adhesives.
Final Thoughts
Installing new sights is one of the easiest and most rewarding upgrades you can make to your Glock.
With the right tools, careful installation, and a quality sight system, you'll enjoy improved visibility, faster target acquisition, and greater confidence every time you shoot.
Whether you're preparing your Glock for everyday carry, competition, training, or home defense, investing a little time in proper installation helps ensure your sights perform exactly as intended.
Ready to Upgrade Your Glock?
Browse Glock-compatible FiberLok models.
Find the Right Sight for Your Glock
Use the TAG Precision Sight Finder.
Compare Fiber Optic vs. Tritium Sights
Learn which sight technology best fits your shooting style.
Need Installation Help?
Our team is happy to answer questions about installation, fitment, or selecting the right sight for your Glock. Reach us at support@tagprecision.com or 972-209-9823.