I know that HPA Tanks fit to 98 Customs without having to have a Reg, but I was wondering on the Custom Pros if you had to buy a Reg to fit HPA since the Pros come stock with a drop forward?
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Tippmann Owners Club Member #292
The only thing a secondary regulator will let you do it fine trim the velocity-
Setting the gun's velocity adjuster to a fixed spot (full velocity) and then tuning with the regulator until you get it down to where it should be. You may save a few shots per tank this way as well.