Hammerhead Battle Stixx Barrel The Hammerhead Battle Stikxx Barrel is a great set-up for any style of play. The Battle Stikxx is a 14 gun drilled, rifled barrel, featuring a reverse ported removable muzzle break, a light defusing finish to eliminate reflective glare, and includes a removable .688" fin (ball sizer). Other sizers and muzzle breaks can be purchased separately. The Hammerhead Battle Stixx Barrel Features: Reverse Ported Removable Muzzle Break Spiral Rifling puts rotation on the ball for greater accuracy Gun Drilled (rifled) Aluminum for accuracy Includes one .688" Fin (Ball Sizer) 14" Length Flat Black, Light Defusing Finish