Apex Optic Mount for HS 509T Footprint Optics to Glock Gen 6 Pistols
$86.25
Mount your Holosun HS 509T footprint optic directly to your GLOCK Gen 6 slide with this steel mount from Apex. It’s machined from billet steel, black PVD finished, and includes a vibration-dampening damper for a secure fit. Made in Arizona.
Available for delivery across the United States.
Description
If you’re running a GLOCK Gen 6 pistol and want to mount a Holosun 509T footprint optic, the Apex Optic Mount for HS 509T Footprint Optics to Glock Gen 6 Pistols is the solution. This mount is machined from a single billet of steel, then black PVD finished for corrosion resistance. It secures the optic directly to the factory Gen 6 optic cut on the slide, using the slide’s locking key and a vibration-dampening damper. Per Apex, the mount and screws are made in the Free State of Arizona.
| Manufacturer | Apex |
|---|---|
| Model | APEX-509T-GEN6 |
| Material | Billet steel |
| Compatibility | GLOCK Gen 6 optic-ready slides with HS 509T footprint optics |
| Finish | Black PVD |
| Weight | 0.6 oz (per manufacturer specs) |
| Condition | New |
Key Features
- Billet steel construction – Why it matters: Steel provides rigidity and long-term durability, preventing flex or shift under recoil that polymer or aluminum mounts can suffer.
- Black PVD finish – Why it matters: Physical vapor deposition creates a hard, slick surface that resists holster wear, sweat, and moisture better than standard anodizing or bluing.
- Damper cavity under front – Why it matters: The included damper sits in a milled pocket, closing the light gap between the mount and slide locking key, and dampens vibration that can shake an optic loose.
- GLOCK Gen 6 specific fit – Why it matters: Engineered to the exact dimensions of the factory Gen 6 optic cut, so you don’t need adapter plates or shims – it drops in and torques down tight.
- Made in the Free State of Arizona – Why it matters: Apex controls the entire manufacturing process from billet to finished mount, ensuring consistent quality and heat treatment.
Who It’s For
This mount is for the shooter who owns a GLOCK Gen 6 pistol with the factory optic cut and wants to run a Holosun 509T, 509T-X2, or any HS 509T footprint optic. It’s for those who trust steel over aluminum, value a low-profile direct mount, and prefer American-made parts. If you’ve had issues with previous adapter plates shifting or breaking, this mount addresses that with a solid steel base.
Pros & Cons
- Pro: Direct mount to Gen 6 slide – no extra plates needed.
- Pro: Steel construction outlasts most aluminum mounts.
- Pro: Damper reduces vibration and closes light gap.
- Con: Only fits Gen 6 GLOCK slides – not backward compatible with Gen 5 or earlier models.
Comparison
| Feature | Apex Optic Mount | Zev Technologies Pro Plate | Agency Arms AOS Plate |
|---|---|---|---|
| Material | Billet steel | 7075 aluminum | Steel |
| Finish | Black PVD | Black anodized | DLC |
| Weight | 0.6 oz | 0.4 oz | 0.7 oz |
| Compatibility | Gen 6 only | Gen 5 & Gen 6 | Gen 5 & Gen 6 |
| Price | $75.00 | $89.99 | $99.95 |
FAQ
Will this mount fit my GLOCK Gen 5 slide?
No. This mount is specifically designed for the GLOCK Gen 6 optic cut. The Gen 5 cut uses a different footprint and recoil lug pattern. You’ll need a Gen 5-specific mount from Apex or another manufacturer.
Does this mount include screws for the optic?
Yes. The mount comes with the necessary screws to attach the HS 509T footprint optic to the mount. They are made by Apex in Arizona and are heat-treated for strength. Always use the provided screws – aftermarket ones may be too long or too short.
Do I need to use thread locker?
Yes. Apex recommends applying a medium-strength thread locker (like Loctite 242) to the optic screws and the mount-to-slide screws. This prevents loosening under recoil. The steel construction holds torque well, but thread locker adds a safety margin.
What’s the damper for? Is it necessary?
The damper is a small rubber pad that sits in the cavity under the front of the mount. It closes the light gap between the mount’s locking key and the slide, and it dampens vibration that could cause the optic to lose zero over time. It’s a simple but effective feature – Apex includes it, and I’d install it.
Why Trust This Mount
- ✔ Nationwide delivery (all 50 states)
- ✔ Ships 1-2 business days
- ✔ 30-day returns
- ✔ Secure checkout
Over 1.2 million GLOCK Gen 6 pistols have been sold since release, and aftermarket support continues to grow. This mount is a direct answer to shooters who want a steel, no-compromise fit for their 509T.
Shop more in our Glock Parts And Accessories or Optic Mounts categories.
Last updated: April 2026
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