Yeah, any HPA tank will do good. On a VS2 im not sure they need HPA or not to function properly. Also the hopper might be an issue, but it depends on how fast you plan on shooting. If it ends up you want a faster hopper, check out the Halo B on here. You can now get them for cheap and you can use them basically on any gun since they feed pretty fast. Check out the Kingman Gun Forums for more information on how to properly maintain your gun.