FN 509: Certified Used Semi Auto with Optic Ready Design

Every defensive firearm decision is a balance between reliability, ergonomics, and real-world value. For shooters who demand a platform that adapts to modern optics and carries a practical, high-capacity option, there’s a lot to like in a compact, duty-minded pistol that arrives ready for purpose right out of the case.

FN 509 is an optics ready pistol offered as a Certified Used option that brings serious bang for your buck. This particular package includes one extended 24-round magazine and one 12-round magazine, an FN soft case, owner’s manual, an optic plate kit, an extra backstrap, and night sights. When you see the Certified Used stamp on any of our firearms, you can be confident that you’re getting a gun only in very good to excellent condition and held to the highest quality standard. All Certified Used Guns come with a ‘no questions asked’ return policy.

Shop this product and you’ll find a complete, optics-ready handgun tailored for those who want a factory-configured platform that grows with your needs. Below we break down the features that matter for duty, home defense, and range use, from the optics-ready slide to the included magazines and night sights.

Design and Ergonomics

Built on a modern polymer frame with a textured grip and modular backstrap system, the FN 509 in this listing adapts to different hand sizes thanks to the extra backstrap included in the package. The ergonomics are designed for positive control during rapid fire and follow-up shots, and the grip texture provides confident purchase without being abrasive to the hands during long-range sessions or training days.

Slide and Controls

The optics-ready slide simplifies mounting your preferred micro red dot. The optic plate kit included in the Certified Used package allows for a range of popular footprint plates to be installed, so you’re not forced into a single mounting option. Controls are low-profile and intuitive, designed to be indexable from both hands when necessary.

Optics Ready and Accessory Kit

The optic plate kit is a practical inclusion that separates this Certified Used FN 509 from a basic trade-in: it lets you install a red dot quickly and securely, which is now a cornerstone of modern defensive-handgun setups. Since the pistol is advertised as optics ready, the slide is pre-cut or compatible with common footprints — the plate and hardware in the kit give you everything needed to fit a micro optic without additional machine work.

Night Sights and Real-World Use

Night sights come installed on this package, offering enhanced sight picture in low-light scenarios. For home defense or transitional-light environments, factory night sights are an immediate advantage — they provide a defined front sight and clear alignment without needing to attach a light or optic to identify your sight picture.

Included Accessories and What They Mean

This Certified Used offering arrives with two magazines — a 24-round extended magazine and a 12-round magazine — providing flexibility for training and carry. The extended magazine is an asset for range sessions and drills where minimizing reloads is useful, while the 12-round magazine is compact enough for duty-style or everyday carry setups where concealment or profile matters.

The FN soft case keeps the pistol protected when stored or transported, and the owner’s manual helps ensure safe operation and maintenance. The ‘Certified Used’ designation means the firearm has been inspected, refurbished if needed, and verified to be in very good to excellent condition — supported by a ‘no questions asked’ return policy for peace of mind.

Field Performance and Applications

In practical use, the FN 509 platform is known for consistent reliability and a trigger system that many find predictable for defensive applications. The optics-ready slide and included plate kit reduce the time between purchase and getting the pistol optics-capable, a clear advantage for shooters who prioritize sighting systems for fast target acquisition. Night sights are a direct benefit for low-light readiness without adding accessories to the rail.

Training and Maintenance

Training with the two included magazines lets you replicate multiple scenarios: use the longer 24-round for endurance and manipulations practice, and the 12-round for carry drills and reload economy. Routine maintenance follows standard striker-fired procedures — keep the feed ramp, slide rails, and barrel clean, and exercise the magazine springs periodically to retain reliable feeding characteristics.

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Why Choose Certified Used?

For buyers focused on value, this Certified Used FN 509 is compelling: you get optics-ready capability, night sights, two magazines including an extended 24-rounder, an optic plate kit, extra backstrap, soft case, and documentation — all for a price of $759.99. The Certified Used stamp indicates the gun meets quality thresholds and is sold with the retailer’s commitment to condition and a clear return policy.

Value Comparison

New optics-ready pistols with similar accessory bundles typically carry a higher asking price. Choosing a Certified Used example reduces the initial outlay while preserving the core features that make the FN 509 a strong defensive and range platform. The included components mean you can mount an optic, run night-sight-assisted practice, and carry the pistol with an appropriate magazine — straight out of the kit.

The FN brand has a long history in the professional and civilian markets; this model reflects that pedigree while offering versatility through optic readiness and accessory support. Whether your focus is home defense, service use, or range training, the combination of night sights, optic plate kit, and a high-capacity magazine makes this package adaptable.

If you’re ready to inspect this specific listing and secure a Certified Used FN 509 for $759.99, Check current availability — the product page links through to the shop where you can view the full item listing and proceed to purchase from the retailer.

— John Wick & Garand Thumb

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.