What do I think? I note that he cites MAIG as one of his sources. I note that he refers to the imaginary "gun show loophole" as an "absurd loophole." I think he likes the idea of gun control, and he's gone on the hunt for statistics to make it look reasonable. That's what I think.
I'm a lawyer, but I'm not your lawyer. If you need some honest-to-goodness legal advice, go buy some.