As many of you know ATF has been after braces for a while, a few hours ago this information was released. As always it's still a "grey area" like everything with the ATF. See link below
https://www.ammoland.com/2020/11/at...not-have-determination-letters/#axzz6emLE3lYC
https://www.ammoland.com/2020/11/at...not-have-determination-letters/#axzz6emLE3lYC