What Reg

[don miguel]

An adjustable tank is only necessary if you want EXTREME RT. I have a preset @ 800 and not noticed any obscure efficiency

Also, and adjusted down tank reg will not save you anymore air than pumping all 4500 psi into it. The built in reg limits it. The gun won't use every bit of psi pumped into it for every shot, so there is no gained efficiency. (If it did, I'd be having a MAJOR velocity issue.)

EDIT: And Classic valves need 400psi minimum to operate, but then that's really slow recharge and low fps. 800psi is just the recomended.

Do most tanks come preset at 750? is that starving the marker if you have a mag?

[don miguel]

You're starting to sound like a SP poster child.

LOL ollie lang does that for me.