Hate to be negative about getting one, but I hope you have plenty of time and money, and don't mind the BATFE stopping by and breathing down your neck whenever it feels like it.
http://www.nraila.org/Issues/FactSheets/Read.aspx?id=70&issue=006
Ummm...which does it take to purchase actions or use the gunbroker and gunsamerica sites?
That would be the FFL, unless you're buying only complete C&R firearms.