Hammerhead Classic Barrel Fin Sizer Size:.693 represents the pinnacle of innovation

represents the pinnacle of innovation in rifled barrel technology

- Mounts on any 20mm rail

drop-leg holsters

and reliability

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Hammerhead Classic Barrel Fin Sizer Size:.693 represents the pinnacle of innovationHammerhead Fins (Sizers) are designed to match the ball size to the barrel. The type of ball, weather and manufacturers tolerances can all have an affect on a paintball size. To optimize your barrel performance it makes sense to have the right sizer for the ball used that day. Hammerhead Fins are 2" in length which is an optimal length based on the amount of air pressure that occurs during the first two inches of a ball being shot out of a paintball