alt Hacker NewsYou're welcome to come up with a better litmus test, but it's beyond clear that lawmakers writing gun control regulation have less than a wikipedia level understanding of the topic. See "shoulder thing that goes up", the weird obsession with the Thompson, the entire concept of an Assault Weapon, etc.
Wikipedia has much better information about guns than most of the people talking about them in politics, generally speaking.
It's not too surprising, considering the way the rules are written at the ATF. There's basically zero logical thought that goes into pistol vs rifle vs felony:
https://www.reddit.com/r/Firearms/comments/a4gnr3/makes_perf...
(Sorry for the reddit link, it's a common image but that was the first url I found from a quick search that had it up front and center).