The favorite media meme is that they convert a semi-auto into a full auto and that is not true or even close.
The danger here is that some minor accessory that (in relation to the number of firearms) very few people bother with will be the camels nose under the tent to ban other parts because of some scary fantasy reason.
Where are the adults? Bowing to the hysterical, demented media demands to 'DO SOMETHING' is equivalent to giving in to your crying child because they are crying. WTF
Well, what with all those hundreds of thousands of bump stocks out there...................... Zzzzzzzzzzzzzzzzz!
An experienced marksman can get close to a rate 600 rounds a minute without any devices.
They want to ban 100+ year old technology, semi-auto firearms.