A long while ago my friend and I were boosting to get the phantom bow, and we didn't realize how bad it would mess up our stats. since then I have been auto-banned from a lot of servers for it. However, I now believe that I have managed to adjust those stats back to a normal value (judging by what my BF4DB states).
https://bf4db.com/player/733867071 (my current weapon stats)
https://bf4db.com/player/733867071 (my current weapon stats)