Umm just to clarify,

Boyles Law "For a given mass, at a constant temperature, the pressure times the volume is constant" So you're actually using more air.

However, with a lower operating pressure of say 600psi (instead of the normal 800-850psi for an A5) you get that extra 200psi of pressure in the tank to use, before the gun burps.

In answer to the parent.

A metal power tube isn't necessary. In fact, its highly doubtfull a crack will occur in the stock power tube when using HPA.

An X7 cyclone is pointless if you're not shooting faster than 8bps, nor has it been modded yet to fit an A5

The jet click is an excellent alternative to the stock ratchet, and the X7 cyclone.

Trinity spring kit will help with any HPA volume issues.

Hey do you mind expanding on that? I'm in the process of making a RVA to work with a collapsible stock. Can the spring kit accomplish what the RVA can?

R

it appears to be quite simple to make an rva work with a car stock. look here:
Can't Adjust Velocity High Enough For Flatline To Work

scroll down the page a bit to where the photos begin.

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Zulu,Not a problem, I was questioning myself more than you. I'm considered a noob in the world of paintball. just wanted to confirm my thinking.

Hey That is waayy simpler than what I made. Although I had most of the parts and made the others at work! On my own time of course!

mmmmm, rhino-lining is the shiznitch!! That stuff is just plan insanse as to how durable it is, we coated a cell phone with it once, THAT was interesting. Might do it to my a-5...

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98% of paintballers...eh, who cares