Yes it can be.
The tippmann A5 is supposed to be used in paintball.
This statement is half true but half untrue. The tippmann A5 and 98 custom do indeed have different threads. But after the A5 tippmann made the X7 which has identical threads to that of an A5. Because of this a barrel with "Tippmann A5" threads, will fit on a tippmann x7, but will not fit on a tippmann 98 custom.
No. the thread pattern is NOT the same
Yes.
There are no manufactured ones
There are no manufactured ones.
Yes, any size Co2 or air tank can be used with the A5 and every modern day, as long as it has the standard ASA threads.
No, the screw set is off and there is holes for the cyclone feed.
Opsgear.com. look up A5 shrouds on the bottom left
Unfortunately no. It would require heavy modification and machining to fit.
I believe it is a5/x7 threaded.
No. The Tippmann handle is screwed on from the bottom, where the bt is held on s rail.