I need to send my Gen 3 G21sf back to Glock. When I bought it used, I was not aware of the 'ambi-release' issues, and this model has the ambi-release. I noticed a problem with certain Gen 3 mags not locking into the gun, that's when I learned about the ambi-release. Since the issue pre-dates my first owned Glock, it's just not something I knew about when I bought it. Anyway, I saw that Glock would swap out the frame for a standard release frame, which I would prefer. I contacted them, and even though this issue is something like 8 years old, they are still happy to swap the frame. They actually suggested I send in the whole gun, with the magazines and they said if it looks like it has a high round count, they'll replace everything. Nice. So here is the question. I know I have to ship UPS or FedEx next day/overnight, and I need to go to one of their shipping depots to do it. I know I don't have to involve and FFL on my end since I'm sending direct to the manufacturer. But my one question is this - when they send it back, will they be able to send it directly to me? Or will it have to go through an FFL. I thought I saw something in a thread once that stated if it's sent for service, they could ship it directly back without an FFL. Am I correct about that? Or do I need to be prepared to pay an FFL to transfer it back to me again?