The FN 509 Midsize MRD is a compact 9mm pistol with a 4″ cold hammer-forged barrel and a 15-round magazine capacity. Its optics-ready slide accommodates micro red dot sights, while the aggressive grip texture ensures secure handling. The black Melonite finish provides corrosion resistance, and the striker-fired system delivers consistent performance. FN’s reputation for reliability makes this model a practical choice for concealed carry or duty use.
Specifications:
- Caliber: 9mm
- Barrel: 4″ cold hammer-forged
- Capacity: 15 rounds
- Finish: Black Melonite
- Brand: FN Herstal
Free FFL transfer to any Tennessee dealer.





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