I have a little 410 shotgun which I believe is called a snake charmer. It is a single shot with additional shells in the stock. I am guessing since it has a hand grip, short barrel and short stock that it may be considered an assault gun?
I looked at a pic of a snake charmer and it looks like they have a thumbhole stock.....with a thumbhole big enough to drive a mack truck through....lol
They would probably grab that one too..... under the one feature rule.