FN 509M Threaded Barrel with Compensator 9mm Luger 4.55" FDE

Overview

The FN 509M Threaded Barrel with Compensator kit is designed for FN 509 Midsize models. This original factory replacement part features a 4.55-inch cold hammer-forged stainless steel barrel with a polished chamber and feed ramp. The kit includes a quick-detach compensator machined from stainless steel with a PVD finish, featuring v-style ports that vector gases upward and outward. This design reduces muzzle rise by up to 25% and decreases felt recoil without the need for shims or threading. The compensator is compatible with standard and self-defense 9mm loads while maintaining use of the factory recoil spring. The finish is Flat Dark Earth.

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