HPA on a JT 4.0???

[soulhunter6]

Im thinking of running a hpa system through the jt 4.0. Has anyone done this? Would I need to replace the expansion chamber and the whole bottomline/dropforward setup? Or would it work well on the stock setup?

[MyJTRox]

I haven't seen it done, but it is rated for co2, n2 or hpa.

[thursday]

no its ok... ou can use HPA or nitro or whatever you want. the expansion chamber wont have to be replaced. i forget what the site was, but they did an in depth review on the 4.0 and they tested it both on co2 and nitro... so.. yep.

[Slenda]

I use HPA. the only adjustment you will have to make is to the flow regulator screw. I had to tighten that screw for my HPA. When i tried to hook my CO2 up to it recently it leaked. So i think you will have to adjust the screw in or out depending on which tank you use if you have both.

[trewslyde]

http://www.pbstar.com did a review and used both Co2 and the Air America Melee system. I think the Co2 did better on consistancy though the melee did better on accuracy.