Introducing Freedom Ordnance FX9 Elite Pistol Threaded Barrel with Pistol Brace. The FX-9 Elite takes our stand FX-9 and gives you upgraded features out of the box. All models have a newly designed rail that uses BCM barrel nut and mounting hardware. In addition to being reliable and affordable, the FX-9 was designed to be completely modular and accepts AR-15 accessories. FeaturesGlock Type MagazineMil-SPec Buffer Tube CompatibleFree FLoat M-LOK RailAR-15 Safety SelectorB5 systems gripWarhammer ambidextrous charging handleElite flash hider designed by Freedom OrdnanceAngled Fore Grip (4" model has a finger stop)B5 Systems rubber M-Lok rail covers (except the 4" pistols)SBA5 brace