For shooters seeking a balance of duty-grade performance and range-day versatility, the FN 509 stands out as a dependable semi-automatic pistol with practical features for defensive carry and training. Tactical users will appreciate that this example is offered in a serviceable condition and ready for immediate use.

FN 509 — Inventory Number SB1117994 is listed as a GOOD-condition pistol per NRA Modern Gun Condition Rating Standards. This factory-black (matte) semi-automatic features a 4-inch barrel chambered in 9mm standard, comes with the original magazine(s), and is sold without a case or holster. Shop this product

Design and serviceability

The FN 509 is a straightforward, striker-fired platform optimized for reliability. The 4-inch barrel offers a good compromise between concealability and sight radius, while the black matte finish reduces glare. The listing explicitly notes the pistol is in GOOD working condition — meaning only minor wear on working surfaces with no broken parts or corrosion that would affect function. For buyers, the inclusion of the original magazine(s) is important for immediate use; note that no case or holster is included, so plan for transport and carry accessories.

Why 9mm remains a practical defensive choice

Chambered in 9mm standard, this FN 509 delivers manageable recoil, broad ammunition availability, and effective terminal performance when paired with modern defensive loads. For defenders and frequent range users, 9mm keeps training costs reasonable while maintaining proven stopping power for close-range encounters.

Operational considerations

As a semi-automatic duty-style handgun from the Fn lineup with model designation listed as Various, the 509 platform is known for part availability and aftermarket support. Because this listing includes no holster or box, confirm holster fit and consider a quality concealment or duty holster that matches the slide profile and 4-inch barrel length. The price of $549.99 positions this pistol competitively for buyers who want a reliable service pistol without paying for extras.

For a ready-to-use 4-inch 9mm semi-auto with documented GOOD condition and original magazine(s), consider this FN 509 at $549.99. View product details and pricing or Check current availability to purchase through our shop page where the retailer provides the final buy options.

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