For professionals and serious carriers, spare magazines are as critical as the firearm itself. Quality magazines ensure reliable feeding, consistent ergonomics, and quick reloads under stress — all essential for duty, training, and personal defense.
FN 509 MIDSIZE MAGAZINE — a 15-round, 9mm Luger magazine designed specifically for the 509 Midsize series. 
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Design and materials that matter
The FN 509 MIDSIZE MAGAZINE features a polished stainless steel body finished in flat black for a balance of corrosion resistance and low-reflectivity tactical appearance. The metal body maintains structural integrity under repeated use and withstands the rigors of range sessions and duty carry. Internally, high-visibility anti-tilt followers improve feeding consistency and make visual checks faster in low-light or high-pressure scenarios.
Why 15 rounds and 9mm Luger?
As a 15-round 9mm Luger magazine, this unit offers a practical capacity for a midsize platform — enough rounds for defensive use without overly increasing grip profile. 9mm Luger remains the industry standard for controllability, magazine capacity, and ammunition availability. For tactical shooters and duty users, the cartridge delivers effective terminal performance while keeping recoil manageable for rapid follow-up shots.
Pricing is straightforward at $44.99, positioning this magazine as an affordable, mission-ready spare for 509 Midsize owners. View product details and pricing
Fit, compatibility, and operational notes
Made for the 509 Midsize series and manufactured under the Fn lineage, the FN 509 MIDSIZE MAGAZINE aligns with the platform’s feed geometry and magazine well. The listing indicates Model: Various, reflecting fit options across the 509 Midsize family. Expect reliable lockup and smooth withdrawals from common mag pouches. Routine maintenance — light cleaning and inspection of the anti-tilt follower and spring — will extend service life and prevent feeding issues.
For 509 Midsize owners seeking durable, purpose-built magazines with anti-tilt followers and a corrosion-resistant body, the FN 509 MIDSIZE MAGAZINE is a solid choice at $44.99. Check current availability and secure spare mags through the shop page where purchases are completed with the retailer. 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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