Fn 509 Semi Auto: Enhanced Duty Magwell & Night Sights for Defense

When selecting a defensive handgun for duty, home defense, or serious sport use, the ability to run an optic, carry extra capacity, and maintain controllability under stress are non-negotiable. The FN 509 delivered here is a certified used example that pairs factory durability with aftermarket upgrades for shooters who want a ready-to-go package.

FN 509

FN 509 optics ready pistol angled view

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HWK XL 5.56 Giveaway

Live now • Ends Feb 1, 2026
Key details
Deadline: Feb 1, 2026
No purchase necessary
Entry link emailed immediately

A third-party retailer is currently hosting a giveaway for an HWK XL 5.56 pistol package (≈ $1,800 retail value).

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High-value package, certified used

This Certified Used FN 509 is optics ready and sold at $799.99. The package includes two 24-round magazines and three 17-round magazines—ample capacity for competitive drills, training, or a range-focused duty setup. The gun ships with the original soft case and owner’s manual, and carries a ‘no questions asked’ return policy for peace of mind.

Upgrades that matter

Enhanced magwell and trigger work

The PMM Enhanced Duty magwell speeds reloads by funneling magazines cleanly into the grip. Matched with the Apex Action flat trigger enhancement kit, you get a smoothed, consistent trigger pull that improves follow-up shot speed while maintaining safety features expected from an FN platform.

Threaded barrel and suppressor-height sights

A threaded barrel gives the owner future flexibility for muzzle devices or suppressors, and the included suppressor-height night sights are designed to co-witness with most red dot footprints—ideal for low-light defensive work or competition where sight acquisition is critical.

Holster and optics readiness

The kit includes a Blackpoint FN509 RMR TLR-1 right hand OWB holster, letting you carry with an installed sight and light attached. The slide is optics-ready, simplifying the installation of a mini red dot for faster target transitions.

View product details and pricing to confirm current inventory and specs.

FN 509 packaged with magazines and holster

Why this FN matters

FN is a proven brand in duty firearms; this configuration blends practical upgrades—magwell, trigger enhancement, threaded barrel, suppressor-height night sights—and a holster/extra-mag setup into a single purchase. At $799.99 for a Certified Used firearm with accessory bundle and return policy, it’s an efficient way to step up to a capability-focused pistol.

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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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