You might want to hold off there...
https://www.ammoland.com/2020/11/at...not-have-determination-letters/#axzz6emLE3lYC
“Read more: https://www.ammoland.com/2020/11/at...not-have-determination-letters/#ixzz6eoUmWzFx
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Editors Note: This story has been edited to clarify previous comments and includes additional facts that have come to light since we first posted. The ATF's confusing and contradictory approval process is an evolving story and we will continue to update and inform our readers as we get better information. Despite rumors, there is no known official change to ATF policy as it relates to the legality of pistol braces.”