This is from early 2014
Before the ATF (which I still say should be a convenience store, not a government agency) decided to come up with an opinion, which changed, which I think may have changed again:
As far as I know, the latest opinion from the 7-11, er, ATF is that you can use it as a wrist brace, or you can use it as a cheek brace, you just can’t use it as a shoulder brace because you have then redesigned the weapon merely by how you hold it.
Anyway, be careful out there boys and girls. It’s a crazy world.