you can tell it's a magic assault rifle because even though it's clearly firing it's not ejecting any brass. i'm supposing that it's caseless (in that the ammunition's propellant is its container and is consumed as spell components for accelerating the payload)
So I am going to have to go with the magic rifle hypothesis. It looks like we are seeing the primary flash( the bullet has left the gun). This would mean that the gas action of the AK-47 would already be cycling. Therefore the only reasonable explanation is, magic rifle.
Ahh I see your admiring my new invention: the air to air vehicle launcher. The DOD said that it couldn't be done, shouldn't be done but who's laughing now?
Doesn't change the fact that these apps are trained on stolen data, and soon, when they're sued into oblivion, they'll be forced to credit artists in a meaningful way.