FN 509 Midsize 9mm — 4″ Barrel, 2x10Rd Mags

The FN 509 Midsize is a compact 9mm handgun engineered for everyday carry and regular range use. Its midsize frame and four-inch barrel deliver a balance of concealability and shootability suitable for users who want a controlled, service-oriented pistol. The design emphasizes ergonomic controls and modular fit for varied hand sizes.

Built with a polymer frame and a cold hammer-forged stainless steel barrel, the FN 509 Midsize presents a durable, low-profile platform with a matte black finish. The slide is finished in black steel and features improved front and rear serrations and combat-style fixed sights for consistent sighting. Two interchangeable backstraps and fully ambidextrous controls are included to support multiple grip preferences and manual manipulation.

Key Specifications

• The caliber is 9mm.
• The barrel length is 4 inches.
• The barrel is cold hammer-forged and has a recessed target crown.
• The frame material is polymer with a black finish.
• The slide is black steel.
• The sights are fixed 3-dot luminescent.
• The weight is 26.50 oz.
• The capacity is 10 rounds.
• The pistol ships with 2 magazines.
• The product includes two magazines and a soft pistol case.

For reliable 9mm performance in a compact, service-style package, consider the FN America / FN Herstal FN 509 Midsize 9mm. Buy the FN 509 Midsize 9mm online today for a versatile everyday carry and range pistol option.