Do not try this at home, I'm a professional Russian. LOL! Funny stuff.
I don't know why he's calling it a Russian weapon though. It was designed and built by an American, Maxwell Atchisson. As a matter of fact the AA in the AA-12 designation stands for Atchisson Assault. There must be a Russian company that makes them as well.
I wonder how going it's going to be until this guy is harassed by the DHS? The extended mag on the 19112 alone is probably enough to get him put on the terrorist watch list.