Can you please Chaeck this Guy out again as Player seem to be Using  Multihack 

https://battlelog.battlefield.com/bf4/battlereport/show/1/1307361850050986752/1006064967562/

Player used   XD-1 Accipiter on Golmud

also had 38 Headshots using Aek-971

https://battlelog.battlefield.com/bf4/battlereport/show/1/1307330151607696448/1006064967562/

Thanks Salty