One of my son's friends wants to sell a transferable full-auto Mac 10 (.45 acp). Son swears that certain dealers are licensed to buy outright (with proper paperwork), bypassing the standard ATF stamp delay. Is there such a thing? Is that known as a Class III dealer? Guy with the gun lives in Portland area and I agreed to ask for local info here in this forum. Appreciate any leads/info I can pass along. Thanks in advance.