^^^^^THIS^^^ sell it without the buffer tube attached to the receiver as a stack of parts previously used as a pistol.Sales of NFA items have always been allowed on the ODT. It is up to the buyer and seller to be sure all laws are followed. Personally I would remove the brace and be sure I had a pistol buffer on the gun. Braces are now “stocks” only, same as the rest of the stocks.
Okuma is reviewing the ATF rules and will decide if he wants to change any policy.