
The FN 509 MRD is a 9mm pistol with a polymer frame, a 3.8-inch barrel and a 6.8-inch overall length. It weighs 25.5 ounces and holds 20+1 rounds, with one 16-round and one 20-round magazine included. The slide is factory cut for Leupold DeltaPoint Pro or Shield RMS footprint red dots, and the internal hammer-fired system gives a crisp, light trigger pull. A trigger safety and additional internal safeties are part of the build.
The MRD suits buyers who want a compact 9mm for everyday carry and personal defense with a red dot in mind. The slide-racking geometry is designed to reduce effort, and the easy-loading magazines help during reloads. Pairing the pistol with the 20-round magazine gives a higher round count without changing the grip.
Key features
- 9mm, 3.8-inch barrel, 20+1 capacity
- Factory cut for DeltaPoint Pro and RMS footprints
- Internal hammer-fired system, light trigger
- Reduced slide-racking effort, easy-loading magazines
- One 16-round and one 20-round magazine
It ships to a licensed dealer you choose, where you fill in Form 4473 and the background check runs.
FN 509 MRD Optic Ready 9mm Black Pistol: quick facts
- What caliber is the FN 509 MRD Optic Ready 9mm Black Pistol?
- It is chambered in 9mm.
- How many rounds does it hold?
- 20+1 rounds; magazines included: 2.
- How big and heavy is it?
- Barrel length 3.8 inches, overall length 6.8 inches, weight 25.5 ounces.
- What kind of action does it use?
- Semi-Automatic.
- Is it optic ready or threaded?
- Optic ready: Yes; threaded barrel: No.
- What sights and finish does it have?
- Sights: Standard Sights; finish: Black.
- Is it new or used?
- New, in the original packaging.
- Can I buy it in United States?
- Yes. It ships to a licensed FFL dealer in United States; you pick it up there after the background check. Ships to your FFL dealer for Form 4473 and a background check at 21 or older; add the dealer's fee to the price. State permits, waits and magazine limits apply.
- Is it in stock?
- Yes, at $492.19. Orders leave within 1-2 business days; shipping is free over $999.







