Optional pinned flash hider for 16" street legal use. 1:7 twist chrome-line SOCOM barrel marked with Colt CAGE Code. Current Production.
Charlie's also offers the identical barrel, already pinned and welded from FN here.
Note: The unpinned barrel is subject to all NFA laws and local regulatory oversight for a short-barreled rifle. Be sure you are familiar with all laws and that you can own and possess a short rifle barrel, or short barreled rifle.