Originally Posted by dr.strangelove
The operational range of the CP reg is wider, so you can use either air source. In fact, that's the primary reason most people move to a CP reg setup. Aside from the convenience of standard threading, that's really the only advantage to a CP reg. But you don't need to use a high pressure tank. Your LP tank is still fine.
Ok thanks! One more question. When I receaved the gun it was leaking real bad out through the frame so I took it completely apart, replaced the rings and relubed it. The leak then went to where that little guide is for the lpr that the noid cable goes through. I took the lpr out and relubed it again and made sure everything was possioned right and put a Hopper through it with no problem. The velocity was low at 235 fps but that might have been the barrel. It was a .695 with .684 paint. Soooo, the next day after I installed the cp I wanted to go dial it in but that leak was back. Any ideas on why it would leak from there? Also how many shims do you run in your lpr? I've got all 4 in it.