I watched the video and what that Italian manufacture has done is put two 1911 semi autos together. Often thought it could be done myself. You can see the double mag wells and from other angles just two guns put together each with their own slide etc. Even the trigger is a double trigger. And yes it would have quite a kick with the mussel flip and recoil of both at the same time. Must be quite a handful to shoot though and I would think one would need large hands to handle it. I would think being double two smaller calibre handguns would work well also with less mussel flip and less recoil for faster more accurate multiple double rounds. That double handgun does seem like overkill and with that kind of kickback it would be slow to get back on target again. Notice how slow he was to get back on target again. And you know what they say about timing. "Timing is Everything". Just like in trading,lol................................