FN 509M Midsize Tactical 9mm 4.5″ Threaded – 5x10rd

The FN 509M Midsize Tactical is a compact, optics-ready 9mm handgun configured for multi-role use including everyday carry, duty, and home defense. This package pairs a 4.5″ threaded barrel with a factory optics-ready slide and night sights to support suppressed and red-dot-equipped setups. The pistol uses a polymer frame with enhanced texture and ships with multiple magazines for extended training and range sessions. Controls and features are oriented toward ambidextrous handling and practical usability.

Key Specifications

• The model is FN 509M.
• The caliber is 9mm.
• The barrel length is 4.5 inches.
• The barrel type is threaded.
• The package includes five 10‑round magazines.
• The standard magazine capacity is 10 rounds.
• The pistol is optics ready with a factory-milled slide for most micro red dots.
• The sights are suppressor-height night sights.
• The frame material is polymer.
• The finish is PVD.

The FN 509M Midsize Tactical combines a mid-size grip profile with a threaded 4.5″ barrel and optics-ready slide to deliver a versatile platform for shooters who value modularity and practical performance. Its included magazines and night sights make it ready for a variety of range and duty applications while the polymer frame and PVD finish offer durable, low-maintenance service life.