FN 509C Compact MRD 9mm Black 509 66-100571

Out of Stock


The FN 509 is a great gun for anyone to conceal carry day to day or on duty! This gun features fully ambidextrous controls, an FN Low Profile Optics Mounting System to make optics mounting as simple as can be, and all-black co-witness iron sights to round out the package. 


With our patented Low-Profile Optics Mounting System and unparalleled modularity of the FN 509 platform, the FN 509 Compact MRD joins the ranks packing a full-size punch in a compact, optics-ready package. The pistol is 9mm and striker-fired with 3.7-inch barrel, standard 12 plus 1 capacity and the capability to accept all higher capacity FN 509 magazines. The patented FN Low-Profile Optics Mounting System accepts nearly all commercially available miniature red dot optics and features blackout iron sights that co-witness. The improved controls aid in manipulation, the new improved texturing on the two included backstraps provides better recoil management, and a new flatter faced trigger allows for more controllable trigger press and cleaner break.

  • Full-sized performance in a concealed carry package
  • Striker-fired autoloader
  • Double-action operation
  • Fully ambidextrous controls
  • FN Low Profile Optics Mounting System with plate adapters for direct mounting of more than 10 optics
  • All-black co-witness iron sights


  • Manufacturer: FN
  • Family: 509 Series
  • Model: FN 509 Compact MRD
  • Type: Semi-Auto Pistol
  • Action: Double Action Only
  • Caliber: 9mm
  • Finish: Black
  • Finish Type: Black
  • Frame: Polymer Frame
  • Grips: Black Polymer
  • Barrel: 3.7"
  • Overall Length: 7.4"
  • Capacity: 15 plus 1
  • # Of Magazines: 2
  • Mag Description: One 12 Rd. And One 15 Rd.
  • Sights: All Black Co-Witness Sights
  • Sight Type: Fixed Sights
  • Weight: 26.5 oz.
  • Shipping Weight: 3.15 lbs.
  • Additional Info: Striker Fired
  • Additional Info: Full Ambidextrous Controls
  • Additional Info: Low Profile Optic Mount System
  • Mfg Model No: 66-100571
  • UPC: 845737010881
More Information
MODEL 509 Compact MRD
TYPE Semi Auto Handguns
UPC 845737010881
Categories: Semi Auto Pistols
Tags: FN
Condition: New
Manufacturer: FN America
Model: 509 Compact MRD
Caliber: 9mm Luger
SKU: 845737010881
MPN: 66-100571
UPC: 845737010881
Vendor: Gunprime
Reviews (4)
By Bryan on 02/21/21
Great Transaction

I have not had an opportunity to get this FN509c to the range yet but it is exactly what I ordered that my local gun shop wanted $75 more for without the RMR slide. No brainer!

By Jack on 02/15/21
Your Expectations Will be Met

I have owned this pistol for one month, with one on one training in the range. I added the red dot and have had excellent results. You will not be disappointed with your purchase.

By Jay on 01/13/21
Small size full size punch

A lot of people told me not to get this but I’ll tell you it’s great out of the box. Accurate. I love the heightened sights and it’s the perfect blend of full size feel in a compact firearm. Happy with my purchase.

By Eric A. on 09/12/20
Fast and friendly service

I’m always skeptical if the inventory is correct on websites when I’m buying online. So I decided to give them a call and check on the FN 509 compact MRD. Was told it was in stock and if I ordered today(on a Wednesday) and if my FFL did his part on time, I would have it by Friday. Gun prime was on it. Ordered online after call and FFL had it in hand Friday midday. That’s my kinda service. Very happy dealing with GP. Will be back to purchase again.

Write your own review