Fn 509 Direct Drop-In Threaded Barrel

This is the perfect upgrade for your pistol-make it suppressor ready! The Apex Threaded Barrels are machined from premium cold hammer stainless steel barrel blanks and feature a 1:10" twist rate and a 1/2-28 thread pattern. Barrels are heat treated and black Melonite finished. A thread protector with captive O-Ring is included with each barrel. - No fitting required Mfg: Apex Tactical Specialties Inc