Man these vids now just keep coming up in my algorithm. If I hadn't been a member of this site or gotten these kinds of content from watching regular gun reviews, I'd have not known about this issue at all. Can you imagine all the folks out there like this poor bastad? I have no idea if the pistol buffer tube is going to be accepted either...I still think the best thing to do for those who can is to put a 16" barrel.
EDIT: why did the guy smash it up? That brace could be used on a legal-length gun? If what he is sayign were true, then ALL stocks and braces would need to be destroyed? I mean obviously a real stock would be better on a non-NFA rifle...but none the less, that brace isn't the issue since it can be sued on legal rifles or airsoft guns...the issue is the short upper from what I have consumed so far on this topic.
If I had a pistol and didnt want a free sbr stamp “trap”, maybe I would do the same thing, probably wait until the last day though. Or trade someone for a longer barrel and stock that wanted to deal with that mess.