Using Rawr on golmud railway.

https://bf4db.com/player/1004517562097

http://battlelog.battlefield.com/bf4/soldier/Aztra_Zero/stats/1004517562097/pc/

And this is the evidence.

https://imgur.com/a/osT4bgI

Also the battlereport:

http://battlelog.battlefield.com/bf4/battlereport/show/1/1102719159979734528/1004517562097/