Now, after watching this video Wednesday evening, I went to SB Tactical's site and checked all of their listings for ARs. Most of them were out of stock which I initially took as them suspending sales, but I did run across a couple that were in stock and for sale. PSA is also selling SB Tactical braces (as well as others) and they are in stock.
Anyways, watch the video and judge for yourself. There is documentation in the form of a PDF link below the video itself if you want to give yourself a headache this early in the morning.
*
The US DOJ is going to be redefining braces to be stocks using vague criteria to make a once legal firearm an unregistered sbr. THIS IS NOT GOOD.
VIDEO HERE (8:23 minutes)