Yes, they both use 98 threads.
Yes, all 98 threaded barrels fit: model 98 98 custom alpha black/ bravo one project salvo/ tango one carver one They will NOT fit: tippmann A5 Tippmann X7/ phenom TPX pistol tippmann prolite spyders or any other companies
Yes, the tippmann 98 and the tippmann custom are the same marker, therefore the threading of the barrel will be the same.
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.
yes
The 68 does not have a removable barrel.
No, the mounting screws are different, it will not fit the 98. There is a 98/USarmy cyclone feed made that will fit.
It depends on the threads of the Apex barrel. If the threads are that of a autococker, A5, or spyder then no, it will not fit. Though if it does have Tippmann threads then by all means it will fit.
On the ends of every barrel there are "threads" These are different for every series of guns. The Salvo marker has Tippmann threads therefore any Tippmann barrels can be use. Smart Parts also makes barrels for Tippmann markers. Actually the Project Salvo is a Tippmann 98 with a different body. It uses Tippmann 98 threads and any barrels that fits the 98 will fit the Salvo. The Salvo can use a A5 barrel if you add a 'A5 to 98′ adapter to convert the threads to the 98 style for your Salvo.
No it does not. there is only one 98 shroud: Related links
Yes, the standard barrel has A5/x7 threads, but you can order it with 98/Alpha black threads.
No. the thread pattern is NOT the same