just reinstate the assault weapons ban that was in place under Clinton and Congress or Bush2 let expire...
enough already....
yes, bad guys could still get a gun on the black market, but when they are banned, the price on the black market will sky rocket, making it much much harder for these 20 to 30 yr old guys to afford them....
if it cuts these mass murders with assault/rapid fire/destructive powered weapons, it's good enough for me, for now.
yes, some rich guy like the Las Vegas shooter may still be out there, able to afford black market prices, but parkland, el paso, and Dayton, the synagogue etc mass murders would likely not have occurred by these young men, or likely to not have been as destructive without semi automatics, by these young men.