FN 509 MRD Optics-Ready 9mm Pistol w/ Co-Witness Sights - Black
The FN 509 MRD Optics-Ready 9mm Pistol w/ Co-Witness Sights - Black is a 9mm full size handguns from FN Herstal. It is available from 3 vendors at $670.99 to $683.49.
Product Information
Name: FN 509 MRD Optics-Ready 9mm Pistol w/ Co-Witness Sights - Black
Brand: FN Herstal
Category: Full Size Handguns
Caliber: 9mm
Barrel Length: 4.5"
Capacity: 17 rounds
UPC: 845737011703
SKU: UCEt9uJLb
Description
The FN 509 MRD is a full-size semi-automatic pistol in 9mm Luger (9x19 Para), built around optics mounting from the factory. It has a 4.5-inch cold hammer-forged stainless steel barrel with a recessed target crown, holds 17+1 rounds, and weighs 27 oz (1.7 lbs). The finish is matte black PVD.
Key Specifications
- Model: FN 509 MRD
- Caliber: 9MM Luger (9x19 Para)
- Action: Semi-Automatic
- Barrel Length: 4.5 inches
- Capacity: 17+1 rounds
- Weight: 1.7 lbs (27 oz)
- Finish: Matte Black PVD
Detailed Features
The FN Low Profile Optics Mounting System ships with plate adapters for most major pistol red dot optics. Co-witness iron sights are included and function as backup if the optic fails. The full-size slide provides a longer sight radius and comes with aggressive serrations for reliable manipulation. The cold hammer-forged barrel has a polished chamber and feed ramp, which contributes to reliable feeding. The frame has enhanced grip texture and interchangeable backstraps for hand-fit adjustment.
Usage Scenarios
The 17+1 capacity and optic-ready platform make this well-suited to home defense where follow-up shots and fast target acquisition matter. Competitive shooters who want a factory optic-ready full-size 9mm in a proven platform will find the 509 MRD a practical choice. The ergonomic frame and manageable weight work for extended range sessions.
Complete Specifications
| Caliber | 9mm |
| Model | FN 509 MRD |
| Capacity | 17 rounds |
| Magazines included | 2 |
| Barrel length | 4.5" |
| Overall length | 7.9" |
| Weight | 27 oz |
| Action | Semi Auto |
| Finish | BLACK |
| Color | Black |
| Sights | 6.3" |
Frequently Asked Questions
What caliber is the FN 509 MRD?
The FN 509 MRD is chambered in 9mm Luger (9x19 Para).
Who makes the FN 509 MRD?
FN Herstal makes the FN 509 MRD.
What type of firearm is the FN 509 MRD?
It is a full-size semi-automatic pistol.
What is the barrel length of the FN 509 MRD?
The FN 509 MRD has a 4.5-inch cold hammer-forged stainless steel barrel.
How many rounds does the FN 509 MRD hold?
It has a 17+1 capacity.
Is the FN 509 MRD optic-ready?
Yes. The FN 509 MRD includes the FN Low Profile Optics Mounting System with plate adapters for major pistol red dot optics, and co-witness iron sights are included as backup.
Where can I buy the FN 509 MRD?
Compare current vendor offers on this page.
Customers Say
AI-generated insights derived from customer reviews and discussions on popular gun-enthusiast forums.
The FN 509 MRD draws strong feedback on build quality and reliability -- those are the most consistent themes from owners. The grip feel and ergonomics get credit for making extended range use comfortable.
The optics-ready design is frequently praised. The co-witness irons as a backup are specifically called out by users who want redundancy in a defensive setup.
On the critical side, trigger pull is the most common complaint -- some users find it heavier than they'd prefer. Optic compatibility is raised occasionally, with a few buyers noting that finding a specific optic that fits cleanly required some research. Overall the feedback is constructive rather than strongly negative.
Where to Buy - 3 Offers Available
Price Range: $670.99 - $683.49
| Vendor | Price | Condition | Link |
|---|---|---|---|
| Guns Com | $670.99 | New | Buy Now |
| Kygunco Com | $676.87 | New | Buy Now |
| Buds Gun Shop | $683.49 | New | Buy Now |
