My viewpoint is the guy was shut down after 9 minutes and considering all things I think that was really good. If he had to reload smaller clips it would take time and bullet count away and increase the possibility of gun jamming. If he didn't have those bump stock things it would seriously reduced the bullet count even more.
Who knows how high the body count could have been had he used silencers. Encouraging mass murder is what the NRA has come to stand for and the whole country and our media is full to the rim with their shills.
What any of these things have to do with the 2nd amendment is beyond me. Flame away.