I think that's an accurate assessment. All it'll accomplish is to make people with homemade firearms much less likely to ever take them to a smith for repair.
I don’t think that is all it’ll accomplish (the NPRM as a whole). I think it’ll effectively kill 80% moving forward.
Or at least we will see how many people were buying them so they could “make” a firearm be those buying them because they could order them online or at a gun show and didn’t need to pay or wait for a background check. Nothing wrong with that. I’ve mostly bought 80s because here it is infinitely longer, more work and cost to buy a stripped Glock frame and build what I want than it is to just buy a poly80, get it shipped to me and then machine it and assemble the gun I wanted.
Hell right now you can’t find stripped Glock frames if you wanted to build the gun from scratch.
I doubt 80s will go away even with ATF’s requirements. But I suspect that the volume of sales will plummet. In MD if they are just treated as other and over the counter, probably still popular.