The issue with that is theres a whole host of braces designed to go on a standard buffer tube.I am not a lawyer nor am I giving advice, however, it does not appear to be confusing: If you can put the brace back on it, its illegal. (illegal = law subverted by ATF deeming something is illegal, not actually illegal = do it and get charged). Essentially, the buffer tube cannot be designed to have been able to accept a brace. You must purchase a buffer tube that will not accept a brace.