Concur with Hunterbuck. Brace rule was recently enjoined nationwide. The legal machine isn’t done with that case, though it appears that it will be defeated. So that brace you surely had separated from that pistol for most of this year appears good to go. A stock on that pistol makes it a Short Barreled Rifle which would be a no no if you didn’t complete the appropriate forms and paid some money to Uncle Sam. I’m no lawyer, but as the rule is currently dead, sell the pistol anytime you want.