That's what makes banning these a horrible idea... because these do NOT turn a semi-auto into a full auto. It still requires one trigger pull for every round fired. It merely enabled you to pull that trigger faster.
By passing a law to ban "fast trigger pulling" you're essentially saying it's okay for Congress to pass more laws like that. I'm telling ya, they'll pass some feel-good/do-nothing law that forces gun makers to install a rate-limiting device on all new firearms. Sale of pre-2018 rifles will be strictly regulated by the Schumer Amendment and you'll have to get ATF sign-off and pay the tax for your stamp.
Sound like a good idea? No? Then don't let Congress tell us how fast we should be able to pull a trigger, or that's exactly what will happen.
Gee wiz its sure sounded like full auto to me and I am someone who would know. Either way the effect is the same despite some minor tech difference.
I fully support people who want full auto, just go through the process and get the license. These cheep workarounds risk us loosing access to the weapons we need.
Will banning bump stocks make a bit of difference, of course not we both know that. But the left will use this issue to strip us of all semi auto access.
The NRA is just being strategic (I am not a member BTW) again you pick the hill you want to die on and this is not good ground to wage a winning battle.