After that last Obama era school massacre was probably the best chance on a federal level of changing gun laws. This time it would take Republican votes and I don't see that. Now a couple copycats go off and maybe just maybe. I say if the NRA jumps up and says "we support the regulations on automatic rifles and we think a bumpstock essentially crates an automatic rifle so they should be illegal." you'll calm down a bunch of folks and actually make a consistent regulation.