FN 509C Handgun Magazine Black with Pinky Extension 9mm Luger 15/rd

The FN 509C handgun magazine in black with pinky extension is purpose-built for duty, training, and defensive carry with the FN 509 Compact platform. This 15-round 9mm Luger magazine bridges the gap between concealability and shootable capacity, making it the go-to choice for law enforcement officers, security professionals, and armed citizens who demand reliability under stress. The pinky extension floor plate adds crucial grip real estate without sacrificing the compact profile that defines the 509C platform.

FN's proven metallurgy and manufacturing tolerances ensure consistent feed reliability and long service life. The magazine body is constructed from hardened steel, while the witness holes along the spine allow quick visual capacity confirmation under low-light conditions—critical when administrative loading or press-checking magazine status in tactical environments. The pinky extension floor plate provides a positive grip point for faster reloads and indexing, a refinement learned from decades of military and police feedback. Spring tension is engineered to maintain reliable feeding through tens of thousands of cycles without degradation.

This magazine is fully compatible with all FN 509 Compact variants, including duty, MRD, and tactical models. Operators carrying a 509C should maintain at least three loaded magazines for duty or defensive carry—one loaded in the firearm and two on the belt or in a bag. The pinky extension design also works seamlessly with standard FN 509C holsters and mag carriers, eliminating the need for specialized pouches. For those transitioning from full-size 509 magazines or other platforms, this FN offering delivers the kind of match-grade fit and finish that prevents feed failures when they matter most.