http://battlelog.battlefield.com/bf4/battlereport/show/1/1062209337233791296/855713002/

Likely running an aimbot. This round shows him getting a total of 56 kills, 43 of which were with a Type 88 LMG, yet he somehow tallied a total of 35 head-shots. That's a really high HSKR for a round where he mainly used a LMG, and he was nailing heads. The next round is similar where he get's about 24 headshots out of 58 kills while not running a sniper. 

http://battlelog.battlefield.com/bf4/battlereport/show/1/1062227271343692096/855713002/