bitttorrent, only two of the states in which I've resided had registration laws: Hawaii and Rhode Island.
(Edit: I was a teenager in RI, and didn't have guns, so it didn't matter. When the Navy sent me to HI, I left all but two of my guns in storage at my parents' place, because I dislike registration. I won't move back to either state, gun laws being one of several reasons.)
Maine, Florida, Texas, Washington, Georgia, and Missouri do not.
Tell me what the benefit of a registration scheme is?
Or tell me why the states I listed are worse than states that have registration?
Government should always have to prove a real benefit, any time it wants to impose ANY restriction of ANY sort, let alone a restriction on a Constitutionally protected right.