Proposer of Gun Ban Doesn't Know Content of Her Own Bill

Here is a clip of NY Rep. Carolyn McCarthy on MSNBC. In it she is asked what a barrel shroud is, something that she proposes to outlaw in her bill HR 1022. She sidesteps the question a few times, but then we really see that she doesn't know what the hell she is talking about and doesn't know what is in her bill. Please, if you are going to try to ban something, at least know what it is first.