They are not enclosed track and yes, they are noisy. But according to studies (I don't know who studies spearguns science), the shaft does aquaplaning after is shot. I don't see how can the directo contact be avoided in an enclosed track.
Anyway, I won't buy anything from them again. Ever. :nono:
it may do the same thing in an enclosed track,, llike hydroplaing on all sides, keeping a water barrier between the barrel and shaft until it leaves the gun completely,, but maybe not..
don have u finished all the mods u want with the airbalete yet?