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Machine Gun Kings

Home / FN 509 Compact MRD 9mm 3.7″ Barrel 15-Rounds Fixed Co-Witness Sights
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FN 509 Compact MRD 9mm 3.7" Barrel 15-Rounds Fixed Co-Witness Sights

FN 509 Compact MRD 9mm 3.7″ Barrel 15-Rounds Fixed Co-Witness Sights

Original price was: $699.00.Current price is: $524.25.

FN 509 Compact MRD Features

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

FN 509 Compact MRD Specifications

  • 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

In Stock – Ships 3-4 Days

SKU: 574e7e86937a Category: Tags: , , , , , , ,

Description

FN 509 Compact MRD 9mm 3.7″ Barrel 15-Rounds Fixed Co-Witness Sights — $524.25

In Stock & Ready to Ship to your New Mexico FFL dealer.

Key Features

  • ✅ FN America Quality — Factory precision and proven reliability
  • ✅ New Mexico Legal — Compliant with all NM state regulations
  • ✅ In Stock & Ships Fast — 3–5 business days to your NM FFL
  • ✅ Authorized Dealer — Full manufacturer warranty included
  • ✅ Expert Support — Real NM firearms experts
  • ✅ New Customer Discount — 20% off first order with code WELCOME20

    • – ✅ **NM Permitless Carry Ready** — No permit needed in New Mexico since 2021
    – ✅ **Concealed Carry Optimized** — Compact, reliable, all-day comfortable

Technical Specifications

Specification Detail
Manufacturer FN America
Model FN 509 Compact MRD 9mm 3.7″ Barrel 15-Rounds Fixed Co-Witness Sights
**Caliber** 9mm
Action Semi-Auto / Striker-Fired
Compliance New Mexico Legal
Warranty Full Manufacturer Warranty

Why Buy from Machine Gun Kings?

New Mexico’s trusted source for AR components, tactical platforms, and firearms. 15+ years serving NM gun owners. Licensed FFL dealer. Shipping daily to: Raton, Cloudcroft, Alamogordo, Las Cruces, Espanola, Carlsbad, Clovis, Belen.

New Mexico Gun Law Quick Facts

  • ✅ Permitless Carry — Constitutional carry since 2021
  • ✅ No Waiting Period — Take delivery same day (after NICS)
  • ✅ No Magazine Limits — Zero capacity restrictions
  • ✅ Castle Doctrine — Strong home defense protections

Frequently Asked Questions

Do I need a permit to carry this pistol in New Mexico?

No. New Mexico passed constitutional carry in 2021. Any law-abiding resident 19+ can carry concealed without a permit.

What’s the best holster for this pistol in NM?

We carry Kydex IWB and OWB holsters for most pistols. Contact us for recommendations matched to your carry style.

Does the FN 509 Compact MRD 9mm 3.7″ Barrel 15-Rounds Fixed Co-Witness Sights come with a warranty?

Yes. As an authorized FN America dealer, Machine Gun Kings ensures every FN 509 Compact MRD 9mm 3.7″ Barrel 15-Rounds Fixed Co-Witness Sights includes the full manufacturer warranty.

Can I use the WELCOME20 coupon?

Yes! New customers get 20% off their first order at Machine Gun Kings. Use code WELCOME20 at checkout.

How long does shipping take to New Mexico?

Most orders reach your FFL within 3–5 business days. We ship Monday–Friday from our New Mexico warehouse.

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