This would allow the piston to move back easily?
Wouldn't this setup be different than the one I proposed?

I think I have my model selected. I am going for a very simple one because I am a complete beginner. I have: -QEV -Slide Valve -12oz Co2 paintball tak -Ball valve -Connectors for each part What I plan to do: -Place a spring in my QEV to help it reset -Have my air tank on the « A » port of my QEV wit...

Thank you Jrrdw, so all I need is the tank, adapters so everything fits, my qev, barrel and slide valve? Do I need anything else between those parts? or simply the release of the slide valve will be okay?

Well I found different models and sometimes they greatly vary. Ive seen that the release from the slide valve allows for a change of pressure, pushing the piston and letting the air out. So if I have my QEV, my co2 tank on the bottom entry hole, my barrel on the R hole and the slide valve on the rem...

I basically never posted, but I am currently building a QEV/Slide valve gun and I am sort of lost. I've looked up many models and I believe I understand the QEV but I would like to know what parts I would need to make the basic gun. I have: QEV (QE-04) Slide Valve (1/2") What parts do I need? Where ...