To get these particularly dangerous guns, the president is doing whatever is within his power to close loopholes in federal law...
Oh, bad guns! Bad bad dangerous evil malicious stinky extra-dangerous scary bad bad bad guns!
In full seriousness: how many fully automatic weapons or short-barreled rifles and shotguns are ever used to commit crimes?
None, but that's probably because full autos are so expensive that anyone who can afford to buy one already has the money, he doesn't need to rob a party store......
There is no reason to have federal regulation of gun mufflers (silencers,suppressors) or short barrelled rifles or shotguns beyond what exists for pistols.
In effect, short barrelled rifles or shotguns *are* effectively pistols, while there has never been a decent reason for these insane controls on gun mufflers, which even most European countries impose far less regulation on than the United States.
http://gunwatch.blogspot.com/2013/11/comment-now-on-proposed-additional.html