This guy was getting constant 1-2 hit kills on players with both the M249(Shown) and in a previous round with the ACW-R.

Player profile: https://bf4db.com/player/252579219

EDIT: apparently the video needs to be 2 minutes, well I dont have that, but I do have 1:15 seconds of the same video which I am uploading now.

Proof: 

Player has been banned https://bf4db.com/player/ban/252579219