Well theirs "gun laws" referring to ownership restrictions ect in most states however I don't see why guns aren't just banned completely with the exception of farmers (livestock protection) and swat.
Police aren't shooting anyone without guns, neither are they going to have massive power based egos like they do now. People aren't going to shoot people because theirs no guns to shoot them with. Sure it could take a while to see a difference but look at any country with guns banned outright and look as the US' gun crime rates and you'll see a big difference.
Also as far as the amendment goes that was to protect the people against a tyrant ruler and basically called for a militia/military to rise up if required. Not so Billy Bob can shoot his cock off by accident because he's off his nut on moonshine