Holosun 509 Adapter Plate for FNX-45 Handgun Mount
Holosun Technologies
$39.99
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Holosun Technologies
Holosun 509 Adapter Plate for FNX-45 Handgun Mount
The Holosun 509 Adapter Plate for the FNX-45 lets you mount a Holosun 509-series optic directly to your FN pistol with a secure, precision-fit connection — no gunsmithing required.
- Designed specifically to mount Holosun 509-series optics on the FNX-45
- Precision-machined for a flush, stable fit with zero wobble
- Maintains correct optic height for optimal sight alignment
- Durable construction built to withstand repeated recoil cycles
- Simple drop-in installation using standard hardware
- Allows co-witnessing with factory or aftermarket iron sights
Who This Is For
This adapter plate is ideal for FNX-45 owners who want to run a Holosun 509T, 509C, or other 509-footprint red dot without committing to a permanent optics cut. It's a smart upgrade for competitive shooters, home defenders, and duty-carry users who demand a reliable, return-to-zero optic mount on one of FN's most capable full-size pistols.
Specifications
| Brand | Holosun Technologies |
|---|---|
| Model | 509 Adapter Plate – FNX-45 |
| Part Number | RPLHS509PLT-FNX45 |
| Compatible Optic Footprint | Holosun 509 Series |
| Compatible Pistol | FN FNX-45 |
| Material | Hardened Steel / Aluminum Alloy |
| Finish | Matte Black |
| Installation | Drop-in, no permanent modification |
| Included Hardware | Mounting screws |
| Country of Origin | USA / Imported |
Frequently Asked Questions
Which Holosun optics are compatible with this adapter plate?
This adapter plate is designed for Holosun's 509-footprint optics, including the Holosun 509T, 509C, and other models sharing the same mounting pattern. It is not intended for Holosun optics with different footprints, such as the 507C or 515 series. Always verify your optic's footprint before purchase.
Will this plate work on both the FNX-45 and the FNX-45 Tactical?
This plate is specifically designed for the FNX-45 platform. The FNX-45 Tactical already features a factory-milled optics cut, so it may not require or accept this adapter in the same way. We recommend verifying fitment with the standard (non-Tactical) FNX-45 before ordering for the Tactical variant.
Do I need a gunsmith to install this adapter plate?
No gunsmithing is required. The Holosun 509 Adapter Plate for the FNX-45 is designed for straightforward drop-in installation using the included mounting screws and standard tools. Most users can complete the installation at home in minutes. Always ensure mounting screws are properly torqued and use thread-locking compound for secure, long-term retention.
