We, as a firearms using community are currently enduring an attack on certain types of legally possessed firearms. It just happens to be the so-called "military style assault weapons", and certain features and accessories that are commonly used on these firearms; such as high capacity magazines, pistol grips, muzzle brakes and flash suppressors, adjustable - folding - collapsable - and yes, slide fire stocks.
These accessories are all used for sporting, competitive, defensive use, and just plain fun, and can, of course be used offensively also.
God help us if after these weapons and accessories have been banned, that the next weapon of choice for murdering psychopaths, is the long range super-accurate, high power optically enhanced, sniper rifle; capable of covertly assassinating a human being at ranges over a half mile, by anyone with moderate skill. "No one really NEEDS a weapon like that for civilian use!!"
I'm not a tin-foil hat wearing paranoid, but I guess I am the kind of hard ass who says that senseless murders, horrific as they are, don't trump my constitutional rights.
The founders of my nation provided for what they recognized as "common sense gun laws", and they guaranteed a well armed and effective citizen army. They would have sneered at the thought of guns that were good only for safe recreational use.

They would have had a stroke at the thought of one man killing a dozen with his rifle, and the rifles of thousands of men being banned because of it.
I don't like long posts, and this has turned into one. I will say that this isn't about bump-stocks, it's not about preventing murders, it's not about common sense, and it is not based on logic. It doesn't take a high ranking member of Mensa to realize this. jd