I am looking to get into my 1st Machine Gun. I’ve gone through the NFA process many times, but first MG. Question, looking for resources on MACs and Uzis. Registered bolt vs. receiver, which Mac is a good for me, what to stay away from, etc. Any help is much appreciated. EDIT: Thanks for the responses. With a MAC, I would definitely go the Lage route. With the M11A1s stamped .380, am I good with ATF to get a 9mm upper? It will be a transferable.