So i've been browsing the forums and seen lots of threads with people talking about their tuned gun. I know that tuning is basically where you open up the guns innards and, i guess, make everything better, but what exactly is done? what parts are replaced? etc.
Also, to those of you who have gotten guns tuned, what kind of differences do you notice (noise level, power, accuracy, etc)?
Finally, if i wanted to get a gun tuned, how would i go about doing that?