I was playing on TBG peal market only, he was instant killing me, some sort of damage mod.

http://battlelog.battlefield.com/bf4/battlereport/show/1/1058166598140437760/350573751/

on that game he got 55% kph

https://www.bf4cheatreport.com/?pid=&uid=Obulition0&cnt=20&startdate=&rid=

also high hs on many weapons: http://battlelog.battlefield.com/bf4/soldier/Obulition0/weapons/869970473/1