Holosun 509 Adapter Plate for FNX-45
Not Yet Rated | Write the First Review SKU: 222-HOL-509PLT-FNX45
UPC: 810047000000
MFG#: 509PLT-FNX45

Holosun 509 Adapter Plate for FNX-45

If you own an FNX-45 Tactical and want to mount a Holosun 509 optic, this adapter plate is the exact tool for the job. CNC-machined from 6061 aluminum and finished with a Type III hard anodize, it gives you a strong, lightweight, and durable base for your optic. Designed specifically for the FNX-45 platform, the plate ensures a secure lockup, holds zero under recoil, and installs without any milling—just a direct, reliable fit you can trust.

Why Choose This Adapter Plate

• Built for FNX-45 Tactical: Precision fit for the FNX-45 optics-ready platform.

• Made for the Holosun 509: Perfect footprint match for the 509 series optics.

• CNC 6061 Aluminum: Provides strength without unnecessary weight.

• Type III Hard Anodized Finish: Resists scratches, corrosion, and everyday wear.

• Secure Mounting Hardware: Includes screws and fittings for a rock-solid install.

• Drop-In Design: Installs easily with basic tools, no permanent modifications required.

Performance You Can Depend On

The FNX-45 Tactical is built for serious use, and your optic mount should be no different. This Holosun adapter plate makes sure your 509 stays stable and zeroed, whether you’re on the range, in competition, or carrying in the field. Every plate is cut to tight tolerances, tested for reliability, and built to give your pistol the performance edge it deserves.

Installation Notes

• Fits FNX-45 Tactical pistols with optics-ready slides.

• Compatible with Holosun 509 optics only.

• Includes screws and installation hardware.

• Apply threadlocker and torque to manufacturer specifications for best results.

FAQ

Is this plate compatible with all Holosun 509 models?
Yes. It is designed for the Holosun 509 footprint and fits all 509 variants.

Does this plate fit other FNX pistols?
No. It is designed specifically for the FNX-45 Tactical optics-ready model.

What material is the plate made from?
It is machined from 6061 aluminum and finished with a Type III hard anodize for strength and durability.

Do I need a gunsmith to install it?
No. Installation is straightforward with the included hardware and basic tools. A gunsmith can install it if you prefer professional service.

Will it hold zero under recoil?
Yes. The CNC machining, anodized finish, and secure mounting hardware ensure the optic stays stable and zeroed even after extended use.