Fn 509 Midsize 15-Round 9mm Magazine: Precision Performance for Defense

Reliable magazines are a foundational upgrade for any defensive pistol setup. A magazine that feeds cleanly, resists wear, and offers predictable capacity can make the difference between an otherwise good pistol and a truly dependable defensive tool.

FN 509 MIDSIZE MAGAZINE

FN 509 Midsize Magazine polished stainless steel body with flat black finish

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Shop this product to add a robust spare magazine to your carry or range kit.

Why the FN 509 MIDSIZE MAGAZINE matters for defense

The FN 509 MIDSIZE MAGAZINE is a 15-round 9mm Luger magazine engineered for the 509 Midsize series of pistols by FN Herstal. At a street price of $49.99, it offers a balance of capacity and reliable function for users who demand consistent performance from every component. FN as a brand is noted for military-grade design and tight manufacturing tolerances, and these magazines reflect that pedigree.

Features & field performance

Build and finish

These magazines feature a polished stainless steel body with a flat black finish that provides corrosion resistance and a smooth feed ramp for cartridges. The stainless construction maintains structural integrity under repeated loading and unloading, while the flat black finish reduces glare and helps protect against wear.

High-visibility anti-tilt follower

The high-visibility anti-tilt follower is a key reliability feature. It helps prevent follower tilt and binding that can cause failures to feed, especially under rapid-fire or extended training sessions. The visual contrast also makes quick magazine checks easier during drills.

Caliber and capacity

Chambered for 9mm Luger and offering 15 rounds, this magazine gives shooters the modern defensive combination of controllable recoil, widely available ammunition, and sufficient capacity for defensive scenarios. The 9mm Luger remains a practical choice for duty, carry, and home defense due to its balance of terminal performance and shootability.

View product details and pricing to confirm fitment for your 509 Midsize model and to see current shipping options.

Close-up of FN 509 Midsize Magazine showing follower and finish

For a dependable spare magazine that matches the design intent of the 509 Midsize series, the FN 509 MIDSIZE MAGAZINE is a purpose-built choice at $49.99. Check current availability on our shop page—clicking the links will take you to our product page where you can purchase from the retailer.

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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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