GOOD for President Trump! Arm the teachers. And also:
Bumpfire stocks are OBVIOUSLY not machine guns. BUT:
You say the anti-gunners on the march? LOL!
Give them a taste of THIS: Videos: How to Bumpfire Effectively without a Bumpfire Stock! Turn UP your sound!
https://www.youtube.com/watch?v=GIC8SMttjjo
https://www.youtube.com/watch?v=-9fD_BX-afo
No need for a Bumpfire stock. Amazingly fun! Accuracy is naturally compromised, though. Short handgun cartridges have the highest cyclic rate, since less bolt travel is needed.
Bumpfiring is 100% legal, and safe in a properly maintained modern sporting rifle. Some gun ranges do not like it, though, because they feel you don’t have adequate control of the firearm. I am sure that could well be the case of you bumpfired a cartridge anywhere from 7.62 NATO (.308 Winchester) on up.
The problem with that is it enables the anit-gunners to say semi-autos are semi machine guns.
Now, by contrast, here is a Slidefire Solutions Bumpfire stock, attached to an AR-15, and shot by a bumpfire virgin:
https://www.youtube.com/watch?v=AwR9di_admE