The most recent use with the AK 5C shows a high HKSR of 97 and 100.
And keeps 57 HS going.
https://bf4db.com/player/1003967848827
https://battlelog.battlefield.com/bf4/battlereport/show/1/1263641354830163968/1003967848827/
https://battlelog.battlefield.com/bf4/battlereport/show/1/1262231546876909376/1003967848827/
http://bf4cheatreport.com/?pid=1003967848827&uid=&cnt=200
https://www.247fairplay.com/CheatDetector/feifei515151
100% Aimbot
If you check the suspect reports you would find that they were boosting, not cheating.