...If the opponents are so dead set on "doing something" well then let's use a little negotiations jujitsu. I would be glad to put bump stocks on the class 3 list (thus no ban, just more paperwork and tax i.e. costs) in exchange for national recognition of state issued CW permits. Straight up deal. Would you take it? I would. Great deal for tens of thousand gun owners and carriers for the reclassification of something that is in all reality a novelity item.
I think your point on compromise is one of our sticking points. The banners define 'compromise' as take a little today, then come back for the rest tomorrow. They NEVER offer up anything in return. Why should we give any ground?
I've never seen the shotgun magazine thing, but other than being unwieldy I don't know of possible other downsides.
For the record, I think those bump stock things are one of the most idiotic inventions ever made. I've only once seen one used in person. They are designed to spray inaccurate fire, so are unsafe. My old club in Ohio would never allow them. I saw it used once in Indiana, but I don't know if he was told to never bring it back.
I'm not ready to jump on the "ban 'em" bandwagon on principle. We always say that guns don't commit crimes, people do. Are we now changing our tune? That just opens us up to claims of "well, you were ok with banning bump stocks, why not ...". I'm also concerned that a vaguely written law could have lots of consequences for work such as trigger jobs.
I think you are right, in that if we decide we have to 'compromise', we should hold out something in return. I would prefer to be able to buy a firearm out of state and take it with me, rather than shipping it to an FFL.