Yes, I remember a friend showing me some rifles he had recently inherited, followed by the statement that as far as he knew they had never been registered and no matter how the law changed, they wouldn’t be registered while he owned them.

Still, bad numbers are all we’ve got. I’m sure most Americans have seen guns, or know gun owners, but I’m also sure most Americans — especially most urban Americans — don’t actually own guns themselves. If they did, people wouldn’t routinely confuse “semiautomatic” and “machine gun” or “submachine gun.”