Tell me you didn’t read my link without telling me you didn’t read my link:
“Depending on the type of FFL, and if the FFL-holder becomes an Special Occupational Taxpayer (SOT) the FFL-holder can purchase and sell machine guns, regardless of when they were made (more on this below), and they can even legally make their own machine guns or lawfully convert current firearms into full-autos. The best part about getting an automatic weapon as an FFL is that you can get it at dealer cost and fast.”