http://www.newsweek.com/las-vegas-g...d-weapon-machine-guns-all-legal-nevada-675310
"Nevada law does not require firearms owners to have licenses or register their weapons, nor does it limit the number of firearms an individual posses. Automatic assault weapons and machine guns are also legal in the state.."
50 caliber machine guns capable of shooting down aircraft are legal in Nevada. I can't help wondering what is controlled - bazookas, surface to air missiles or not even?
Well Nevada is an odd state, but you bring up a point that a lot of posters do not not understand here, which is federalism. The 10th amendment. All powers not expressly vested in the federal government are left to the States, so when you talk about gun control it's a broad and varied brush.
The laws in my State are obviously quite different. But I have represented clients on gun charges, and once you have any kind of criminal record, your chances of getting a gun registered/permitted legally are basically none. This guy had no criminal record so he would have been able to get pistols or rifles in my State legally and then modify them to be automatic weapons. The ban on assault weapons would not have mattered even if Nevada/Las Vegas had one.
I did see one of my clients lose his license and carrying permit because of a criminal arrest, for threatening and breach of peace. Although I got the charges nolled, he had to sell his guns and waived appeal of the suspension of his carrying permit. Although the agreement was without prejudice to reapply for a permit to carry (which would be unconstitutional under the 2nd amendment if the State denied that right), the State Police retained the power to deny him a permit to carry in the future and they probably will, and he will likely go to jail if he gets any kind of gun charge.
All of this is to say that even if it doesn't look like there are controls, there actually are at the State level in most States other than Nevada. I had read this guy actually got his guns in California. But most of the western US states are very unregulated in regards to guns, for historical and cultural reasons previously mentioned.
The Sandy Hook case raised a more troubling issue. In Connecticut a mentally defective person cannot get a carrying permit. But in that case the weapon was owned by the suspect's mother. He shot her with it, then a bunch of school kids, all because Mom did not properly secure her weapons. How do you make people properly secure the weapons? You don't. You also cannot ask people not to give birth to mentally disturbed persons. Laws would not have stopped that tragedy, unless there were laws requiring people to secure their weapons where mentally disturbed children cannot find them, or else requiring no guns in premises occupied by mentally disturbed persons. Such laws don't exist and could never be practically enforced.