When evaluating a defensive semi auto for duty use or home protection, build quality, ergonomics, and service history matter just as much as the baseline specs. A certified used option can deliver factory-level reliability at a lower outlay while giving you confidence through inspection and warranty policies.

FN 509 — this listing arrives as a Certified Used firearm with two 17-round magazines, the original box, soft case, owner’s manual, ambidextrous controls, and an extra backstrap. The Certified Used stamp means the pistol has been inspected and graded very good to excellent, and it includes a ‘no questions asked’ return policy. The price is $427.49, positioning this Semi Auto entry as a practical value for buyers seeking FN quality without paying full retail. Shop this product

Design and Controls

The FN 509 platform is known for a duty-oriented chassis and robust controls. This example emphasizes ambidextrous ergonomics — full left/right slide stop and magazine release — allowing faster transitions and more comfortable handling for both right- and left-handed shooters. The included extra backstrap lets you tune grip circumference for better purchase and recoil management in rapid strings.

Magazine Capacity and Carry Options

Two 17-round magazines come with the package, providing high-capacity readiness straight out of the case. For a Semi Auto intended for defensive or range use, 17-round magazines offer a strong balance between capacity and grip ergonomics. The soft case and original box make transport and storage straightforward, while the owner’s manual covers basic maintenance and safety protocols. View product details and pricing

Certified Used Value and Buyer’s Notes

Buying Certified Used can be the smartest path to an FN-quality handgun without the new-gun premium. This package includes everything needed to start training: two mags, spare backstrap, and documentation. At $427.49, it represents notable value for an FN-branded Semi Auto held to inspection standards and backed by a clear return policy.

Practical Takeaway

If you want a service-ready Semi Auto with ambidextrous controls and a complete kit for training and carry, this FN 509 Certified Used offering is a strong candidate. The included magazines, soft case, and extra backstrap simplify setup, and the $427.49 price point makes it approachable for many buyers. Check current availability on the product page to see shipping and purchase options. Check availability

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