Apex Tactical Specialties 9mm Threaded Barrel for FN 509 - 4"

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. For Use In These Guns: FN 509 9mm pistols with a factory 4" non-threaded barrel and Tactical models. What's Included: 1 ea. Apex Threaded Barrel 1 ea. Thread Protector w/ O-Ring (installed)