Though, people who love restrictions upon the RKBA hate us anyway, so it's no great loss.
So?. The NFA is a null void act of congress that any state is free to ignore.
Or ignore it since the ATF cant stick with one position for 15 min.Seems pretty simple, you have two choices.
1. Remove the Pistol brace that NOBODY uses as it was intended, attached to your forearm.
2. File a Form 1 SBR application, pay for your $200 tax stamp, and wait a couple month's to get it approved. Then you can shoot your AR pistol's anyway you want.
Real Americans know that all these rulings, laws, etc. are an end run around the second amendment. Pretending they are anything else makes our side look like idiots.