So my little brother is 18, decided he wanted an AR, and purchased an RRA lower from a guy out in IL. We live in NC so he got it transferred to an FFL near us (Firepower Inc.) So it comes in yesterday, he goes to pick it up, and they tell him that they cannot legally transfer the lower to him as it could be used to make an SBR or AR Pistol. They want him to fill out the paperwork for it as a pistol (which he can't because he is under 21). Before he got it transferred there he filled out some paperwork, so they obviously knew before they took possession of it that he was 18 years old, and that he was getting an AR Lower Receiver. What are his options in terms of taking possession of it? Cliffs: 18 yr old brother orders RRA lower, gets it transferred to a local FFL. When it comes in they tell him it can be used as an SBR or AR Pistol and will not complete the transfer to him unless it is registered as a pistol.