
Availability: In Stock
The Meprolight MPO Pro-F is a dedicated optics mounting base built specifically for the FN 509 pistol. If you're running a red dot or reflex sight on your carry gun or duty weapon, this matte black aluminum base gives you a solid platform for co-witnessing with iron sights or mounting your optic of choice. Meprolight engineered this platform to provide a reliable zero-hold foundation so your sight stays true through draw, recoil, and hard use in the field.
Built from aluminum and finished in matte black, the MPO Pro-F is designed to integrate seamlessly with the FN 509's slide geometry. Whether you're setting up a duty rig, a home-defense pistol, or a competition gun, a quality mounting base is non-negotiable—your optic is only as good as the platform it sits on. This base handles that job without fuss.
The modular MPO system philosophy means you get a mounting solution purpose-built for your specific platform rather than a universal adapter that compromises fit. That attention to detail matters when your sight picture has to stay consistent shot after shot.
| Brand | Meprolight |
| Model | MPO Pro-F |
| Firearm Compatibility | FN 509 |
| Material | Aluminum |
| Finish | Matte Black |
| Part Number | 901141031 |
Yes, this base is purpose-built for the FN 509 platform.
The MPO Pro-F is designed as a mounting platform for compatible red dot and reflex sights. Check your optic's mounting footprint against this base before purchase to ensure compatibility.
The aluminum construction with matte black finish is designed to resist corrosion and glare during field use.

SKU: 152747503 • Width: 2.9in • Height: 0.3in • Depth: 5.3in • Weight: 0.055oz





Availability: In Stock
The Meprolight MPO Pro-F is a dedicated optics mounting base built specifically for the FN 509 pistol. If you're running a red dot or reflex sight on your carry gun or duty weapon, this matte black aluminum base gives you a solid platform for co-witnessing with iron sights or mounting your optic of choice. Meprolight engineered this platform to provide a reliable zero-hold foundation so your sight stays true through draw, recoil, and hard use in the field.
Built from aluminum and finished in matte black, the MPO Pro-F is designed to integrate seamlessly with the FN 509's slide geometry. Whether you're setting up a duty rig, a home-defense pistol, or a competition gun, a quality mounting base is non-negotiable—your optic is only as good as the platform it sits on. This base handles that job without fuss.
The modular MPO system philosophy means you get a mounting solution purpose-built for your specific platform rather than a universal adapter that compromises fit. That attention to detail matters when your sight picture has to stay consistent shot after shot.
| Brand | Meprolight |
| Model | MPO Pro-F |
| Firearm Compatibility | FN 509 |
| Material | Aluminum |
| Finish | Matte Black |
| Part Number | 901141031 |
Yes, this base is purpose-built for the FN 509 platform.
The MPO Pro-F is designed as a mounting platform for compatible red dot and reflex sights. Check your optic's mounting footprint against this base before purchase to ensure compatibility.
The aluminum construction with matte black finish is designed to resist corrosion and glare during field use.
SKU: 152747503 • Width: 2.9in • Height: 0.3in • Depth: 5.3in • Weight: 0.055oz
