Everyone crying over this that owns a brace I only have one question: Of all the times you handled your braced gun, how many or what percentage did you use the brace as the inventor intended? Compared to haw many times you used the brace like it was a stock?
Nobody is crying.
For starters, it’s literally none of anyone’s business how another human being decides to manage their personal protective posture, or how parents protect their children.
The Founders and Supreme Court have laid that down pretty thick with multiple cases over the years, including the SCOTUS declaring that,
The Supreme Court ruled that it had the power to overturn and/or control laws of Congress with the ruling written by the great Chief Justice John Marshall, which simply said: "All laws repugnant to the Constitution are null and void."
Marbury v. Madison, 1803 5 US 137
"The people's right to bear arms, like the rights of assembly and petition, existed long before the Constitution, and is not "in any manner dependent upon that instrument for its existence." This ruling also upheld that all able bodied males are members of the militia (one of three such clear rulings).
U.S. v. Cruikshank, 1876 92 US 542, 553
In 1897 the Supreme Court ruled that the right to arms is an "ancient" and "fundamental" right, a right which was "inherited from our English ancestors" and has existed "from time Immemorial."
Robertson v. Baldwin, 1897 165 US 275
The Supreme Court stated that, the great and essential rights of the people are secured against legislative as well as against executive ambition. They are secured, not by laws paramount to prerogative, but by constitutions paramount to laws." (Chief Justice Hughes quoting James Madison).
Near v. Minnesota, 1931 283 US 697, 714
In a first amendment case involving freedom of the press and religion, the Supreme Court ruled "The power to impose a license fee on a constitutional right amounts to prior restraint and the power to restrict or deny the right ... a tax laid specifically on the exercise of these freedoms would be unconstitutional."
Murdock v. Pennsylvania, 1943 319 US 105
The Supreme Court ruled that "The United States is entirely a creature of the Constitution. Its power and authority have no other source. It can only act in accordance with all the limitations imposed by the Constitution."
Reid v. Covert, 1957 354 US 1
The Supreme Court has ruled that a state official who, "under color of state law," deprives a citizen of a right guaranteed by the federal Constitution may be held personally liable for damages.
Hafer v. Melo, 1991 No. 90-681 Now, I realize that everyone was trained from childhood to ask permission from the state for everything, whether it was to raise your hand in class, to go to the bathroom, to get up, to sit down, to leave the cursed room, or to call your parents, but none of this conduct is Constitutional, right, or natural. It is 100% antithetical to the foundational principles of our Nation, and those who advocate for something different are at odds with the framers and dozens of SCOTUS cases. I only listed a few of them for brevity.
To sum it up, under US law, your rights as a human being do not come from government, they exist by nature of your humanity. No government body has the right to tell you what you can and can’t have relative to keeping and bearing arms, nor do they possess authority to declare otherwise.
Any actions contrary to this by people under the color of law are severe criminal acts punishable with personal liability for any damages, since they don’t have authority to violate the people’s natural right to keep and bear arms.
That is US law on this matter.
www.ammoland.com 
gunowners.org 
