The FN 509M Midsize Tactical is a multi-role, optics-ready pistol designed for EDC, home defense, and duty use. It is chambered in 9mm and features a 4.5″ cold hammer-forged barrel with 1/2×28 threading for suppressor or muzzle device compatibility. This package is finished in black and ships with five 10-round magazines, suppressor-height night sights, interchangeable backstraps, and an FN soft case. The slide accepts most micro red dots via FN’s Low-Profile Optics-Mounting System.
Key Specifications
- The caliber is 9mm.
- The barrel is 4.5 inches long and features a 1/2×28 thread pattern.
- Standard magazine capacity is 10 rounds.
- The package ships with five 10-round magazines.
- The weight is 27.9 oz.
- The overall length measures 7.9 inches.
- The frame is made from polymer.
- The slide uses FN’s Low-Profile Optics-Mounting System and is optics-ready.
- Equipped with suppressor-height night sights.
- The barrel is cold hammer-forged stainless steel.
Practical and purpose-built, the FN 509M Midsize Tactical combines a full-hand grip frame with a midsize slide for controllable recoil and quick sight acquisition. Its optics- and suppressor-ready features, combined with included magazines and interchangeable backstraps, make it a flexible platform for shooters seeking a capable, modular pistol for daily carry, duty, or home defense scenarios.
Product information is supplied by the manufacturer and/or distributor and may be automatically formatted or enhanced using AI for clarity and consistency. While we strive for accuracy, specifications, features, and included items may change without notice. Always verify details using the manufacturer’s official documentation and the information shown on this product page before purchase or use.
