It's most likely going to be some weird system of central storage, grandfathering, and limits to the amounts of purchases you can make. None of which will keep the criminals from buying off the black market, but an innocent person will be made a criminal because they didn't have his papers in order, that I can assure you.
I've warned my non-political firearms owning friends, donated $1600.00 to gun friendly politicians, and I'm rethinking about joining an advocacy group. I was surprised that all of them got to speak in the Senate. My only question is, which one of them is the least incompetent? I stopped giving them money, but perhaps I should rethink my decision.