I think this is close. I posted this on jack hiedels page, ( no need to figure out how to spell his name, wont be running that long)
from what I can find, there are roughly 15 million AR-15,s in the U,S. that don't count all the other mag fed weapons, M1a mini14 sks. ak-47. FAL.s and H&K.s I think all these would put the total over 20 million there were 7 mass shooting last year, so you want to punish about 20 million legal gun owners who don't cause a problem, because of 7 shooters? enforce the laws we already have, its already illegal to murder someone,