The compact 9mm defensive pistol market rewards buyers who demand reliability, modularity, and sighting options that make fast, accurate shots second nature. For shooters who want a ready-to-run platform that works on the street and at the range, the right build matters.
FN 509 is a 9mm compact pistol with a 4.25″ THREADED barrel in excellent condition and very little wear. This example comes equipped with USAH3GY night sights, a Vortex Viper red dot, one 12rd hi-cap magazine and one 24rd extended hi-cap magazine, plus the factory softcase and manuals — all offered at $749.99. Shop this product
Design and practical features
The threaded 4.25″ barrel provides a longer sight radius than typical subcompact slides and allows users to add a suppressor or compensator where local law permits. The included USAH3GY night sights deliver low-light visibility without depending solely on the optic, while the Vortex Viper red dot offers fast target acquisition and a clear sight picture for both defensive and competition-style drills. The combination of iron sights and a quality red dot is ideal for redundant aiming systems.
Ergonomics and magazines
FN’s ergonomics on this platform are tuned for a broad range of hand sizes. The package includes a 12rd hi-cap and a 24rd extended hi-cap magazine, giving users the option to trade concealability for extra capacity during range sessions or duty use. The factory softcase and manuals make storage and transport straightforward.
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Performance: range and defensive use
The 9mm chambering balances recoil control, terminal performance, and magazine capacity—ideal for defensive carry and training. With the Vortex Viper installed, shooters report faster sight transitions and improved accuracy under stress. The excellent-condition cosmetic and mechanical state of this pistol reduces the need for immediate upgrades, letting owners focus on fundamentals like trigger control, reloads, and presentation.
This FN 509 package delivers a ready-to-run compact platform with modern sighting and magazine options at a competitive $749.99. Check current availability and purchase details on the product page where you can complete a retailer purchase. Check availability
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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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