The FN 509 for sale is a modern, duty‑grade 9mm striker‑fired pistol built to deliver reliability, modular ergonomics, and a wide range of mission‑ready variants — from the base FN 509 to tactical, midsize, and optics‑ready MRD models. Designed and manufactured by FN America, the 509 family combines a robust steel chassis and proven striker system with user‑friendly features like interchangeable backstraps, high‑capacity magazines, and threaded/optic options for tactical or everyday carry configurations. If you’re ready to buy FN 509 online, you’ll find models that suit duty use, concealed carry, and competition alike.
Performance, Reliability & What Buyers Expect
The FN 509 was purpose‑built with durability and serviceability in mind. Out of the box the standard 509 ships in 9×19mm with a 4.0″ barrel, a 17‑round standard magazine (10‑round options available for restricted states), and an unloaded weight of approximately 26.9 oz — numbers that balance capacity, controllability, and carryability for users who demand dependable performance. The platform’s trigger pull is commonly reported in the 5.5–7.7 lb range, tuned for safe handling while still offering positive follow‑through for accurate shot placement. For buyers who want extended range or suppressed accuracy, the FN 509 Tactical adds a 4.5″ threaded barrel and extended magazine options.
FN’s quality control and design pedigree make the 509 a popular pick among law‑enforcement agencies and civilian owners who expect consistent function under stress. The pistol’s box‑magazine platform, robust slide geometry, and easily serviceable internals minimize downtime and simplify maintenance — a major advantage for owners who train regularly or depend on a pistol for duty or everyday carry. Independent reviews and field reports have repeatedly cited the FN 509 for dependable feeding, consistent ejection patterns, and long service life when maintained properly. Recoil+1
Key Features & Typical Specifications
Shoppers comparing models will want quick access to the hard specs and feature highlights. Below are the common, buyer‑facing specifications and selling points that convert well on product pages and category listings:
Key specifications (typical FN 509 base model)
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Caliber: 9×19mm (9mm Luger).
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Barrel Length: 4.0 in (base model). F
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Overall Length: ~7.4 in.
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Weight (unloaded): ~26.9 oz. FN® Firearms
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Standard Capacity: 17‑round (also available in 10‑round for restricted jurisdictions).
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Trigger Pull: ~5.5–7.7 lb.
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Frame: Polymer with steel inserts; glass‑filled nylon grip modules with interchangeable backstraps.
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Variants: FN 509 Tactical (threaded barrel, optic‑ready options, extended mags), Midsize, Compact MRD.
Key selling features
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Optics‑ready slide cuts on MRD/Edge models for micro‑red dots.
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Threaded barrel and factory suppressor‑ready features on Tactical variants.
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High‑capacity magazines and state‑legal low‑capacity alternatives. Wikipedia
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Robust factory finish and aggressive grip texture for positive purchase.
Sales, Accessories & Maintenance
When selling the FN 509, promote conversion drivers: optics‑ready packages (MRD/Edge), tactical bundles that include threaded barrels and extra magazines, and holster/optic compatibility notes to help buyers visualize the complete setup. Accessories such as night sights, red‑dot footprints, spare 17‑ and 24‑round magazines (Tactical), and slide plates for MRD installs are commonly purchased alongside the pistol.
Maintenance is straightforward: field‑strip the 509 per the owner’s manual, clean the bore and slide rails after extended range sessions, and periodically inspect recoil springs and magazine springs for wear. Use quality 9mm ammunition during break‑in and rotate magazines occasionally to preserve spring life. Proper cleaning and lubrication — and using genuine FN replacement parts when needed — will keep a 509 running reliably for thousands of rounds. FN® Firearms+1
Frequently Asked Questions
Is payment secure when buying the FN 509 online?
Yes — purchase only through authorized, PCI‑compliant checkout pages that use HTTPS encryption and trusted payment processors. Reputable dealers also use tokenized card processors, support EMV/3‑D Secure where available, and provide order confirmation, tracking, and fraud protection. Look for seller badges, verified reviews, and clear refund/return policies for added peace of mind.
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