Then here's your argument: don't ban bump stocks, regulate them the same as automatic weapons.
Just stay away from the argument that nothing about bump stocks should change.
Absolutely not.
This is one incident. A gruesome one, absolutely horrific. But I will point out that one of these has been used in a crime, a crime which is poorly understood in regards motive. No other bump-fire device has been used in a crime, yet you advocate heavily regulating these devices, devices which the BATFE under the Obama administration twice okayed.
There is a lot of emotion surrounding this incident, and that appears to be the driving force behind calling for a ban. One thousand times as many people die from hospital acquired infections every year as were killed in this incident. Two thousand times as many more than were killed in this incident die annually because their doctors screwed up. We won't even go into the number killed in abortions, but to put this one-off incident into perspective, there are things in this world far deadlier than a device which has been used once in a highly unusual crime, and other factors which might prevent such a crime would be far more effective than taking the property of innocent people from them without due process of law--people who have done nothing wrong.
Then, too, comes the question of just what devices you are talking about. Will the Aleve I take that takes the stiffness out of my trigger finger and enables me to cycle the firearm more efficiently be considered a "machine gun"? How about a tactical glove that takes the chill away and lets me operate the trigger better? --a rubber band that, with proper technique can duplicate the effects of a bump stock? --a loop of para cord or bootlace?
Without making anything that can be used to replicate that rate of fire illegal, there is no point, but my point is that you can't make everything that can be used to do that illegal without making it illegal for someone with lace up boots to have a semi-auto, or making someone who has a semi-auto a criminal for having a bungee cord.
Another law? No. We already have laws against shooting people. If that didn't do it, making criminals out of innocent people will not accomplish your goal. I am not willing to give up my rights or endure the hazard of someone else's interpretation of what is or isn't something that could help me shoot faster for the mere illusion of safety.