When a defensive pistol needs to disappear under a jacket yet deliver on demand, the details matter—controls, sights, grip geometry, and how a gun carries in the real world. I’m looking for quiet confidence: the kind of sidearm that rides light, points naturally, and runs clean in the worst moments.
The 509 delivers that mindset from the first rack to the last round.
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Why this FN matters
FN has been at this a very long time, and the 509 shows the lineage. Built as the successor to the proven FNS series, this striker-fired pistol is purpose-built for duty and defense. Think consistent trigger press, a rugged slide, and a frame designed for hard use. The all-black profile is more than aesthetic—it cuts glare and blends into the environment without drawing attention, whether you’re carrying OWB on the range or concealed under a simple cover garment.
Striker-fired confidence and practical ergonomics
A duty pistol earns its keep with repeatable performance. The 509’s striker system is tuned for a predictable break and reset, supporting clean trigger work when the heart rate spikes. FN pairs that with interchangeable backstraps so different hand sizes can lock in the grip without compromise. Swap backstraps until the sights track flat in recoil—that’s where speed and control live.
The frame is polymer for reduced weight and weather resistance, which matters in real carry. Rain, sweat, and time don’t ask for permission; polymer keeps the elements from stealing reliability. Corrosion resistance isn’t flashy, but it’s the difference between a pistol that looks good today and a pistol that still runs after years of service.
Ambidextrous controls done right
As a trainer and a shooter, I want controls that don’t make you choose a side. The 509 comes with fully ambidextrous controls out of the box. Magazine release and slide stop/slide release are mirrored, letting left- and right-handed shooters run the gun the same way without aftermarket parts. If you practice one-handed manipulations or support-hand-only drills, you’ll appreciate how these controls reduce wasted movement and keep the pistol on line.
3-dot luminescent sights you can actually use
FN outfits the 509 with 3-dot luminescent sights that charge with ambient light. In transitional light—the parking lot at dusk, a hallway with mixed lighting—those dots give you immediate alignment without chasing the front sight. Pair that with a clear sight picture and you get fast confirmations that keep rounds true. It’s a small detail until it isn’t.
Safety and readiness features that matter
This model includes a loaded chamber indicator for quick visual or tactile checks. It ships with no manual safety, favoring a streamlined presentation free of extra levers. That design keeps the draw stroke honest and the manual of arms simple: good holster discipline, proper trigger finger placement, and a consistent press. If you carry daily, fewer steps means fewer chances for error when seconds count.
Capacity, magazines, and carry
The pistol includes two 10-round magazines—ideal for jurisdictions with capacity limits and for training sessions where you want consistent reload reps built into every string of fire. Ten rounds in the gun, ten on deck, and a rhythm that keeps you honest on your reloads. The all-black slide and frame help the gun ride low-profile, and the overall balance makes it comfortable for long carry days without feeling front-heavy.
Built for the Semi Auto realm
This platform sits squarely in the Semi Auto category—modern, reliable, and supported by a broad ecosystem of holsters and accessories. FN’s reputation for duty-ready pistols means you’re not experimenting; you’re stepping into a system that’s already been vetted in hard use. While this specific listing doesn’t publish a caliber, the 509 family is known for its defensive pedigree, and the features here underscore that mission: striker-fired consistency, ambidextrous operation, and sights you can trust under pressure. Always verify the exact chambering on the shop page before purchase so your training, ammo, and spares stay streamlined.
At a listed price of $639.99, you’re paying for durability and thoughtful design—not gimmicks. It’s a fair number for a sidearm built to work, not just to be photographed.
Shop this product to see current offers and specs on our store page, which links directly to the retailer for purchase.
Field notes: how it runs
Draw stroke and presentation
The frame texture provides traction without chewing up clothing. From concealment, the beavertail and tang geometry guide the hand high into the bore line, giving you control when you need to press fast. Presentation is smooth, and the luminescent 3-dots settle quickly for that first decisive shot.
Recoil and control
In live fire, the 509 tracks predictably. The trigger reset is tactile, helping you ride the reset without slapping. Interchangeable backstraps let you tune point of aim so the pistol returns flat, not high or low. That translates to faster strings with fewer sight corrections.
Manipulations and reloads
Ambidextrous controls shine here. Index the mag release with either hand, run slide-lock reloads without a thumb hunt, and keep your support hand where it belongs. The 10-round magazines insert cleanly with positive lockup. Keep one magazine strictly for dry practice and one as your carry mag—track them, maintain them, and they’ll take care of you.
Carry considerations and setup tips
Pair the pistol with a quality holster that fully covers the trigger guard and provides reliable retention. Because this model runs without a manual safety, disciplined trigger management and a rigid holster are mandatory. For sights, confirm your zero at realistic distances and test the luminescent dots in low-light dry practice. If your environment is wet or humid, the polymer frame and corrosion resistance will pay dividends—wipe down, lube correctly, and you’re good to go.
What you see is what you get
FN’s track record is the draw here. Successor to the FNS line, duty-ready striker system, ambidextrous controls, 3-dot luminescent sights, a loaded chamber indicator, and two 10-round magazines—wrapped in a no-nonsense black package that works across roles: home defense, range training, or everyday carry.
Is it right for you?
If you want a striker-fired defensive pistol that favors simplicity, resilience, and ambidextrous function, the 509 checks those boxes. It’s built for people who train, carry responsibly, and prefer a sidearm that doesn’t ask for excuses. The price reflects quality components and a duty pedigree, not fluff.
Ready to put one to work? Check current availability on our product page—click through to see the live retailer listing and secure yours while it’s in stock.
People Also Ask
What makes this product stand out from competitors?
This product offers superior quality and innovative features that set it apart in the market. Its design focuses on both performance and reliability, making it a top choice for professionals and enthusiasts alike.
Is this product suitable for beginners?
Yes, this product is designed with user-friendly features that make it accessible to beginners while still offering advanced capabilities for experienced users.
What warranty or support is available?
The product comes with comprehensive warranty coverage and excellent customer support to ensure your satisfaction and peace of mind.
How does this compare to similar products in its price range?
This product offers exceptional value for its price point, providing features and quality that typically cost significantly more in comparable alternatives.
What maintenance is required?
Minimal maintenance is required thanks to the product’s durable construction and quality materials. Regular cleaning and occasional inspections will keep it performing optimally.
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