Not to be combative and this is an honest question because I always kind of just rolled my eyes and walked by when the sales pitch started the few times someone tried to sell me one at a show:
What was the marketing angle on them?
Well Like I said my research is not exhaustive.
The Akins Accelerator which is like the grand daddy bump stock Im not sure how that was marketed, far as I know it was only for the ruger 10/22 and I didn't have a 10/22 so didn't pay much attention till after the ATF reversal.
Trigger cranks I think are usually marketed as novelties.. but I never paid much attention to them.
Binary triggers.. Im not sure, I think at least one marketing angle was on competition, I briefly looked at the franklin armory binary triggers before first getting scared at the price and then getting terrified at the product.
I could not wrap my head around a trigger that discharges when you release it I was for sure I'd end up shooting my self with the damn thing.
Not sure who all is making bump stocks, Slide fire is the only one I can name off the top of my head it came out after the Akins and I thought they were interesting but I believe the at the time price was like 200-250.. which seemed way overpriced for a hunk of plastic.
The way the thing operates seems kinda crude and I just assumed at some point it would suffer the same fate as the Akins spring or no spring.
So I only looked at them when they first came out and haven't kept up with their marketing strategy since.
I remember when they first came out it was marketed as a safer way to bump fire, it was suppose to be fun and used for recreation, possibly training.
But I went over the slide fire to see what the current message was and here's what I dug up.
So here's the video or one of the video's I remember early on
https://www.youtube.com/watch?v=x0f7OCnrrpk
Emphasis safety, fun.
Here's a more recent one again emphasis fun/recreation
https://www.youtube.com/watch?v=TI3occOYH7g
But than we come across this one
https://www.youtube.com/watch?v=hCCT8JtwQeI
Eh.. thinly cryptic.. This might play into your wink/nod marketing.
Lastly we have a video for their belt fed AR, completely solution with a belt fed modified upper and a bump stock.
https://www.youtube.com/watch?v=UC3nsxeMsBY
Well.. What I can I see this one quite literally says simulated full auto and no tax stamp..
So maybe there is something to your point.. at least in some instances.
I guess I have not paid enough attention to recent marketing on these things.
Still originally at least the message was clear it was for fun/recreation not try and skirt any sort of law.
And if you look what people was using them for that's exactly what they're being used for.. fun.. recreation.
Far as I know the vegas shooter is the first one to use a bump stock in a crime.
He did so with tremendous success, But than again I think everyone can agree his planing was methodical.. bump stocks or no Im sure his shooting spree would have been devastating.
Even the gun grabbers like Di-Fi are dumbfounded on how they could have stopped this particular incident.
P.S I See they've been busy and came out with a 10/22 stock now that's something I wouldn't mind having and I could afford to feed it.
22lr is fun to shoot quick.