Pretty sure it's a bunch of untrained civilians having a good time. Also, the shell was designed for big game hunting in Africa. I've never been big game hunting, so I have no idea how effective it is. At this shooting range it is more or less a novelty. A novelty kind of like GunPorn scripting! Take it out on a Sunday, shoot it a bit and click round on that monstrous HUD, then put it away for the week because it's not very combat effective.