We have seen quadrotors doing practically everything from formation flying, control via smartphone or even scheduled flights that can interpret the theme of James Bond. The latest a quadricopter equipped with a powerful gun.
The video has been released by FPS Russia, or whatever it is, the work of Dimitri, a young Russian has become quite popular in the network with a lot of videos where he test all kind of weapons.
In this case the video casts doubt on the veracity of it. Dimitri had previously tested individual tools for getting a gun that left them in exchange for advertising.
The idea of quadricopters of warfare is not new or anything, but the images, whether or not a fake, just think about the near future that awaits the development of drones for warfare.
I leave you with some of the above "evidence" of Dmitri Young. How he states: "Do not try this at home! I'm a professional Russian ..."