I dont know yet. That would be the most straight forward for the agency. If that's the route they take, my next SBR will be "free". I was going to send the paperwork after Christmas, I may wait to see how this goes.
Oh, I would definitely wait to see how any of this goes. If the democrats control congress in January and they push through Biden's gun control wish list, braced pistols will be the least of our problems.