Well. I was referring if the owner wants to skip the NFA process by just selling the lower by itself and new owner files for sbr. Of course, the original owner could transfer on form 4 which means no more engraving but they would have to wait 6 months.
Or you could do what Quiet stated. Just depends on what the buyer wants. If they don't want to wait, could just do another form 1 meaning he would have to engrave the lower. If he can wait, he could do form 4 which means no engraving but they would have to wait for approval.
Gotcha.