When you want a compact, duty-capable handgun that performs on the range and handles real-world defensive tasks, you look for proven design, clean ergonomics, and magazines that keep you in the fight. We break down what matters to practical shooters and tactical-minded owners so you can decide quickly and confidently.
FN 509 [BLK]
The FN 509 [BLK] arrives ready for immediate use: this is a semi-automatic 9x19mm pistol with a 4″ barrel, finished in matte black, and it comes with the original box and papers. It also ships with two 17-round magazines and is listed at $499.99 — a strong value when you balance factory warranty, parts availability, and the practical features it brings to the table. If you want to examine or purchase, Shop this product and view full purchasing options on our shop page.
What makes the FN 509 [BLK] stand out
FN Herstal’s reputation for robust service pistols carries into this model. The FN 509 [BLK] is built on a platform designed for law enforcement and civilian defensive use, meaning tight tolerances, reliable feeding, and ergonomics shaped for a wide range of hand sizes. The matte black finish helps reduce glare on the range while offering a durable protective coat suitable for regular use.
Key factory details you should know
From the product description: serial number GKS0016726 confirms this specific unit, and the package includes original box and papers — a detail collectors and responsible owners appreciate for resale, transfer, or maintaining a documented provenance. The pistol ships with two 17-round magazines, giving you high capacity from the moment it arrives. Those mags are compatible with the 9x19mm chambering, which is widely available and economical for training.
Caliber and performance: why 9x19mm is the practical choice
The FN 509 [BLK] is chambered in 9x19mm. This caliber remains the standard for many defensive and range platforms because it balances recoil management, terminal performance (when using quality defensive loads), magazine capacity, and cost per round for practice. With two 17-round magazines included, you get extended range sessions and meaningful drills without constant reloads.
Barrel length and real-world effects
The 4″ barrel on this pistol is a practical compromise between compact carry and ballistic performance. Compared to shorter-barreled compact pistols, a 4″ barrel generally produces slightly higher velocity and a more forgiving sight radius for faster, more accurate follow-up shots on the line. That length keeps the pistol compact enough for a range bag or duty holster while still delivering consistent point of impact for a wide variety of ammunition loads.
Ergonomics, controls, and durability
FN has designed the grip geometry and controls to be intuitive. Slide serrations, take-down procedure, and magazine release placement are all engineered for rapid training adaptation. The FN 509 [BLK]’s matte black finish stands up to regular handling, and the two included 17-round magazines mean fewer interruptions when practicing reload drills or running tactical strings.
We recommend pairing the pistol with quality night sights or a compatible red-dot option if you prioritize fast target acquisition. The platform’s accessory options and aftermarket support are strong, thanks to FN’s widespread industry presence.
Practical applications and recommended uses
For a homeowner, range shooter, or someone building a carry-ready set, the FN 509 [BLK] serves well as a training and defensive platform. Its semi-automatic action and 9x19mm chambering make it economical for high-volume practice. The inclusion of original box and papers keeps the transfer record clean and may ease warranty or service interactions with FN or authorized dealers.
Its 4″ barrel and 17-round magazines make the pistol flexible: suitable for precision-focused dry-fire and live-fire drills, yet compact enough for everyday transport in a holster system that supports that barrel length.
If you want to check stock or see current photos and specs, View product details and pricing on our product page.
Ownership considerations: paperwork, serial, and value
Serial number GKS0016726 is listed with this unit. For buyers who value complete documentation, the fact that this pistol includes its original box and papers is significant. That documentation preserves provenance and simplifies eventual resale or transfer. The $499.99 price point positions this FN 509 [BLK] as competitive compared to other duty-style pistols with similar feature sets and magazine capacity.
Field testing and maintenance notes
From an operator’s perspective, keep a maintenance schedule: regular disassembly, bore and chamber cleaning, and lubrication on critical rails will preserve reliability. If you cycle different ammo types during range work, pay attention to function testing after any switch in bullet weight or brand. The two 17-round mags included are a great baseline, but adding spare mags and a quality magazine pouch will make training and deployment more efficient.
Buying through our shop page will take you to the product listing where you can complete your purchase through the retailer. If you’re ready to move forward, Check current availability and secure this FN 509 [BLK] while it’s in stock. We recommend confirming local transfer requirements and ensuring safe, legal transfer protocols for your area.
Final thoughts from the range
Between the reliable semi-automatic platform, the practical 4″ barrel, included 17-round magazines, and the solid packaging with original box and papers, this pistol represents a strong buy for shooters who want a ready-to-use defensive handgun that won’t break the training budget. At $499.99, it’s an opportunity to own an FN-built service-style pistol with a proven pedigree and immediate range-ready capability.
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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