The FN Compensator Kit (brand part no. 20100808) is a black, 9mm compensator kit built for FN 509-pattern pistols. FN cuts V-style ports on both sides of the compensator to vector gases and muzzle flash out and away from the shooter’s field of view, noticeably flattening felt recoil so the sight picture stays consistent from shot to shot. It’s sold as a complete kit, giving 509 owners a straightforward way to add real recoil control without a custom gunsmithing job.

Key Specifications

• Chambered in 9mm.
• Features V-style ports on both sides of the compensator.
• Vectors gases and muzzle flash away from the shooter’s field of view.
• Noticeably reduces felt recoil.
• Keeps a flatter, more controlled shooting experience.
• Maintains a consistent sight picture shot to shot.
• Ships without sights.
• Sold as a complete compensator kit.
• Reduces muzzle rise by approximately 25%.
• Installs tool-free onto FN’s proprietary non-threaded quick-detach (QD) barrel system.
• Compatible with FN 509 Standard, Midsize, and Compact models.

Frequently Asked Questions

Which pistols is this compensator kit built for? FN 509-pattern pistols.

How does this compensator reduce recoil? V-style ports on both sides vector gas and muzzle flash away from the shooter’s field of view.

Buy the FN Compensator Kit

Flatten recoil and keep your sight picture consistent shot to shot. Order it from our FN America / FN Herstal lineup of handgun barrels as soon as it’s ready to ship from our Lubbock, Texas gun shop.