I have a CA AUG, but the fps was very low (180 fps) and the range was also not good. So, researching the problem, I came to the conclusion that the hop-up bucking was done. So I changed that out and it seemed to work a bit better. I haven't had a chance to go and test it fully again, but I read up on something else. I upgraded my barrel to a 6.03x590mm. Does this mean I need a bore-up kit for the more air needed in the barrel? Or would I be fine with the stock size? Do I need to have a cylinder/barrel ratio just greater than 1 or higher?