It's not everyday that you can sweep yourself with your quad-drone named Charlene.
He must be making pretty decent money to invest in the computer generated graphics in that video. It's not real. There is no way it is feeding 100 rounds of ammunition capable of those terminal ballistics through that tube. There is not enough room on the body of that AR upper receiver for a trigger mechanism or functioning bolt.
Phylo got to say it before I did...FAKE. I think this was done a while ago to promote a game or a movie.