What contempt this clown has for his readers. Can you imagine a sports reporter writing "the hoop -- the circle the players try to throw the basketball into" or a travel reporter writing "the ticket -- the document the passenger presents to show that he has paid for the trip"?
Well, to be fair, the average liberal Washington Post reader probably doesn’t know squat about guns.
He's writing for the Washington comPost. Many of the readers are effete urban weaklings, like himself. He probably just learned all that, and his assumption that they don't know is probably accurate of a large percentage of the subscribers.