People like this guy below in the attorney's original article that post pictures of them using it as a stock and with a VFG attached? plain stupid.
View attachment 12341
The weapon displayed was a pistol with a sig brace. Very legal
Now add the foregrip and you have an SBR if the total length of the device is under the "magic" twenty six inch rule.
Now shoulder the brace as a stock and you have done it again.
Now be a complete and total duma$$ and post commercial video of you breaking a handful of batf "rules" effectively poking the bloody bear.
Folks the brace, sig or otherwise, are legal. Enough said, mind your own business and use the tools within their limitations. Otherwise you run the risk of losing them.