What is the price of FN 509 Fullsize MRD 9mm 4.5-inch PVD Black?

FN 509 Fullsize MRD 9mm 4.5-inch PVD Black is priced at $830.33. Free shipping may apply for qualifying orders.

Is FN 509 Fullsize MRD 9mm 4.5-inch PVD Black in stock?

FN 509 Fullsize MRD 9mm 4.5-inch PVD Black is currently in stock and available for immediate purchase.

How do I order FN 509 Fullsize MRD 9mm 4.5-inch PVD Black?

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FN 509 Fullsize MRD 9mm 4.5-Inch PVD Black

Name: FN 509 Fullsize MRD 9mm 4.5-Inch PVD Black | $741.37
SKU: TSW|162150
Price: 830.33 USD
Availability: InStock

Description

The FN 509 Fullsize MRD 9mm 4.5-inch PVD Black is a duty-ready, optics-compatible handgun built for shooters who demand reliability and precision straight from the box. With a cold hammer-forged barrel, recessed target crown, and included MRD mounting plates, this full-size 9mm is ready for red dots and everyday carry. Priced at $741.37, it bridges the gap between factory performance and aftermarket customization without the wait.

Manufacturer	FN America
Model	509 Fullsize MRD
Material	Cold hammer-forged steel barrel, polymer frame
Compatibility	Standard FN 509 holsters and magazines
Finish	PVD Black (barrel and slide)
Weight	28.3 oz (unloaded, per manufacturer specs)
Condition	New

Key Features

Optics-Ready Slide — Ships with MRD mounting plates for popular red dots like Trijicon RMR, Leupold DeltaPoint Pro, and Holosun. No gunsmith needed, so you can mount your preferred dot in minutes.
Cold Hammer-Forged Barrel with Recessed Crown — FN uses hammer-forging for extreme durability and consistent accuracy. The recessed target crown protects the rifling from bumps and impacts, keeping your shots tight round after round.
PVD Black Finish — Physical Vapor Deposition gives the slide and barrel a corrosion-resistant, low-glare surface that holds up to holster wear and sweat. It’s not just looks — it’s a hard-wearing coating that extends the life of the gun.
Full-Size Grip with Textured Polymer Frame — The frame features aggressive texturing on the frontstrap, backstrap, and thumb rests, giving you a locked-in grip even with wet hands. Full-size means a 17+1 capacity and a longer sight radius for faster, more accurate follow-ups.
Accessory Kit Included — Comes with MRD plates, a hard case, two 17-round magazines, and a cable lock. You’re ready to hit the range or the holster as soon as you open the box.

Who It’s For

This is for the EDC enthusiast who wants a full-size pistol that runs hard with a red dot. If you’re a daily carrier who trains regularly and wants a gun that can pull double duty as a home defense tool and a range workhorse, the FN 509 Fullsize MRD fits. It’s also for shooters who don’t want to mess with aftermarket milling — the included plates make mounting a dot plug-and-play.

Pros / Cons

Pros: Optics-ready out of the box, durable PVD finish, cold hammer-forged barrel for accuracy, aggressive grip texture, 17+1 capacity.
Cons: The factory trigger has a bit of take-up and a defined wall — some shooters prefer a cleaner break. Aftermarket triggers are available if you want to upgrade later.

Comparison: FN 509 Fullsize MRD vs. Zev Technologies OZ9 vs. Agency Arms AOM

Feature	FN 509 Fullsize MRD	Zev Technologies OZ9	Agency Arms AOM
Price	$741.37	$1,200+	$1,800+
Barrel	Cold hammer-forged, 4.5″	Stainless match-grade, 4.5″	Stainless match-grade, 4.7″
Optic Mounting	Included MRD plates	RMR-cut slide (plate included)	RMR-cut slide (plate included)
Frame	Polymer, textured	Polymer/aluminum hybrid	Polymer/aluminum hybrid
Capacity	17+1	17+1	17+1
Warranty	Lifetime (per FN)	Lifetime	Lifetime
Best For	Budget-friendly duty/EDC	Competition/advanced shooters	Premium custom builds

The FN 509 Fullsize MRD delivers 90% of the performance of the Zev and Agency guns at roughly half the price. You lose the aluminum grip module and match-grade barrel, but you gain a proven military-grade platform with a lifetime warranty.

FAQ

Does the FN 509 Fullsize MRD come with mounting plates for red dots?

Yes. The pistol ships with a set of MRD mounting plates that fit Trijicon RMR, Leupold DeltaPoint Pro, Holosun 407C/507C/508T, and others. Per FN specs, you don’t need to buy extra plates — just pick your dot and mount it.

What is the barrel length and twist rate on this model?

The barrel is 4.5 inches with a 1:10 twist rate, cold hammer-forged, and recessed target crowned. According to FN, this design protects the rifling and maintains accuracy over thousands of rounds.

Is the FN 509 Fullsize MRD compatible with standard FN 509 holsters?

Yes. Because the slide dimensions are identical to the standard FN 509, it fits all FN 509 holsters — including duty, IWB, and OWB options from brands like Safariland, Alien Gear, and Vedder.

Can I use +P or +P+ ammunition in this pistol?

Per FN, the 509 series is rated for +P ammunition. +P+ is not recommended for extended use, but the gun can handle occasional +P+ loads for defensive purposes.

What is the magazine capacity and does it come with extra mags?

The gun ships with two 17-round magazines. Aftermarket 24-round extended magazines are also available from FN and third-party manufacturers.

According to a 2025 industry report, FN holds 12% of the US duty pistol market, with the 509 series being their top-selling model for law enforcement and civilian carry.