Special 3 Fin Kit Barrel Fin Sizer Thread:Tippmann 98 687 bore size is the

687 bore size is the perfect size for Shaped Projectile® / First Strike Rounds

The innovation of the Hammerhead Barrel System took more than 10 years to develop and was awarded with multiple patents by the U

Hammerhead Fins (Sizers) are designed to match the ball size to the barrel

The barrel provides minimal pressure in front of the ball

Special 3 Fin Kit Barrel Fin Sizer Thread:Tippmann 98 687 bore size is theThe latest patented design Hammerhead Barrel Fin Sizer, built upon the Auto Cocker thread platform to ensure maximum compatibility and versatility. Features: Add 1 inch overall length Female side Auto Cocker Male side (Select Threads) Auto Cocker, A5, Tippmann 98, Spyder This kit contains: 1 x Barrel Fin (Select Threads) Fin Size Included . 681, . 683, . 6851 x Ball Gauge1 x Lithium Grease pod1 x Case Made In USA