The Vulcan Fury is the third gun mod for the gunstaff. It is a blue mod, and has mid/far-range with the fastest rate of fire; to make a sort of machine gun like feature. It was originally called the Vulcan Barrel, but soon got changed because the Vulcan Fury is fueled with HCBE instead of Blue Eco. It is perfect for groups of enemies. You get it at the Phantom Blade in Keira's workshop.