This is a GunZ armor calculator which calculates which armor is the best for you.
Put information accordingly with weapon weights/ ring weights/ sword /level/weight, etc. Then press calculate.
Personally for me, I improved my AP rate by 4, which is pretty good.
Found this on another forum, don't know if it was posted already, but whatever. I found it helpful.
BTW, I opened it before I started GunZ up to check my weights, and it didn't get detected, so I recommend doing that unless you want to check if it works after. But I was too lazy
http://www.mediafire.com/?9mndjzjj5md