The FN FN509C 9mm 12-Round Pinky Extension Black Magazine is built for shooters who demand dependable performance without frills. Machined and assembled with precision by FN America, this mag pairs tight tolerances with rugged materials to give you repeatable feeding and long service life. It’s designed specifically to fit the FN 509C 9mm platform, so you’ll get a drop-in fit and consistent indexing every time you rack the slide.
Durability was the priority in its engineering: hardened steel body and a reinforced feed lip resist deformation from repeated loading, and a robust spring maintains consistent pressure for reliable rounds-down-the-barrel in both single-stack and rapid-fire scenarios. The extended pinky baseplate gives a better grip purchase for those with larger hands or anyone who prefers the extra control, while remaining compact enough that concealment and holster fit aren’t compromised. The black finish resists wear and blends with most duty and carry setups.
You’ll notice attention to the small details — a smooth follower that reduces hang-ups, mirror-polished internal walls where friction matters most, and a baseplate profile that’s aggressive enough to aid reloads but won’t snag on pouches. Every component has been tested to meet the expectations of serious shooters: range rats, instructors, and people who rely on their gear for work. It’s a simple, honest upgrade that addresses two things shooters care about most: reliability under stress and a tactile interface that helps your hands work faster and cleaner.
Maintenance is straightforward. The magazine strips down for routine cleaning and inspection without special tools, and replacement parts are widely available should you ever need them. Because it’s made in the USA by FN America, you get the reassurance of domestic manufacturing standards and supply-chain oversight — a tangible plus for anyone who values homegrown craftsmanship in their gear.
Whether you’re equipping a duty belt, upgrading a carry pistol, or building a reliable training setup, this 12-round pinky-extension magazine offers practical improvements where they matter: fit, feel, and function. It’s not flashy, but it gets the job done — and it’s built to keep doing it.
Order it today from SMKW!