FN 509C Compact 9mm | 3.7″ Barrel | 66101641

The FN 509 Compact (FN 66101641) is a compact 9mm pistol packaged as a five-magazine bundle intended for everyday carry and high-round-count practice. It features a 3.7-inch cold hammer-forged, recessed-crown barrel and a shortened polymer grip with interchangeable backstraps for concealment and improved ergonomics. Low-profile, snag-resistant sights with a high-visibility front dot and fully ambidextrous controls simplify manipulation in routine carry and range use. A compact red-dot sight such as the Trijicon RMR Type 2 pairs well with this platform for quicker target acquisition while remaining compact enough for carry.

Product Specifications

• The manufacturer is listed as FN America / FN Herstal.
• The model is sold as the FN 509C Compact (509C).
• The manufacturer’s part number is 66101641.
• The caliber is 9mm.
• The barrel measures 3.70 inches and is cold hammer-forged.
• The barrel has a recessed target crown and a black finish.
• The stated capacity for the largest magazine is 24 + 1.
• The bundle includes one 12rd, one 15rd and three 24rd magazines for a total of five magazines.
• The frame material is polymer with a black finish and an integrated Picatinny accessory rail.
• The grip uses interchangeable backstraps and enhanced texturing.
• The sights are described as low-profile rear with a high-visibility front dot (HiViz front, low-profile rear).
• The overall length is listed as 6.80 inches.
• The unloaded weight is listed as 25.5 ounces.
• The UPC is 845737016760.

This bundle provides a compact, practice-friendly pistol package with a full set of magazines and a ballistic case to organize and transport the pistol and accessories. The combination of a 3.7-inch cold hammer-forged barrel, aggressive slide serrations, and enhanced grip texture makes the FN 509C practical for everyday carry and extended range sessions where repeatability and control are priorities. If you favor a compact platform that accepts multiple magazine capacities out of the box and comes ready for training, this FN 509C bundle delivers a complete kit without unnecessary additions.

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