Description
Swapping the rear sight on a Glock used to mean brass punches, a steady hand, and hoping you didn't cant the sight or ding the slide. The Ameriglo GTool5 does away with all that. It's a dedicated rear sight pusher built to remove, install, and dial in the windage on the rear sight of any Glock pistol, using controlled pressure instead of impact. That means fewer scratched slides and a lot less cursing at the workbench.
What the GTool5 Handles
This tool covers the whole lineup. It works across every Glock generation from Gen 1 through Gen 5, and it's set up for MOS optic-cut slides and the skinny Slimline models like the 43, 43X, and 48. The slide clamp shoe locks the slide in place and supports it fully while you work, so the whole assembly stays put and square. From there the fine-thread shaft does the heavy lifting, letting you creep the sight into the dovetail a hair at a time and stop right where you want it. That fine thread is the difference between nudging a sight to perfect center and blowing right past it.
Room for Tall Backup Sights
One of the standout updates on the GTool5 is clearance for taller sights. The redesigned body handles backup and suppressor-height sights up to .600 inches overall, which is a big deal if you're running an optic and want co-witnessing irons or you've got a can on the gun. A lot of older pushers choke on anything taller than standard height, so this opens the door to modern setups without needing a second tool.
If you own more than one Glock or you like tinkering with different sight configurations, a dedicated pusher like this pays off fast. It gives you the freedom to test setups, upgrade to night sights, or re-center a rear sight after a range trip, all from your own bench with repeatable, predictable results.
Key Specifications
- Manufacturer: AmeriGlo
- Model: GTool5
- Manufacturer Part Number: GTOOL5
- UPC: 644406913610
- Tool Type: Rear Sight Pusher / Installation Tool
- Compatibility: Glock Gen 1-5, including MOS and Slimline slides
- Max Sight Height: Up to .600 inches overall
- Slide Support: Slide clamp shoe
- Adjustment: Fine-thread shaft for precise windage control
- Category: Gunsmithing Tools & Supplies
- Shipping Weight: 3.99 lbs
What’s Included
- Ameriglo GTool5 rear sight installation tool
Frequently Asked Questions
Does the GTool5 work on Glock MOS and Slimline slides?
Yes. The GTool5 is built to handle every Glock generation from Gen 1 through Gen 5, and that includes MOS optic-cut slides and the narrower Slimline models like the 43, 43X, and 48. The slide clamp shoe adjusts to support the slide across those different profiles.
Can the Ameriglo GTool5 install suppressor-height or backup sights?
It can. The redesigned body clears taller sights up to .600 inches overall height, so it handles suppressor-height and backup iron sights that many older pushers won't accommodate. That makes it a solid pick if you're running an optic and want co-witnessing irons.
Do I still need to file or fit the sight before using the GTool5?
Aftermarket rear sights are often cut slightly oversized so they hold tight in the dovetail, and some may need light fitting for a smooth press. The sight should start into the dovetail with hand pressure and go about a third of the way before the tool takes over. If it takes extreme force, stop and check the fit rather than forcing it.
Is this tool just for Ameriglo sights?
No. While Ameriglo builds its GTool line to support its own sights, the GTool5 pushes standard Glock dovetail rear sights regardless of brand. As long as the sight fits a factory Glock dovetail and stays within the height range, you're good to go.




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