If we were a truly free country (Get rid of NFA '34, GCA '68, FOPA '86) ... I'd want a Thompson in 10mm. Nothing against the .45 ACP ... in a pistol. Just that the carbine barrel could really bring out the advantages of the 10mm.
“10mm Thompson” - I like the sound of that!!!
There was an episode of “Sons of Guns” a while back, where a Sheriff brought in a semi-auto Thompson (complete with violin case and all) that he’d received as a gift.
He wanted it turned into something useful, so he had Will Hayden and Co. upgrade it to full auto and modernized it with polymer stock, grips, and Picatinny HELL “all over da place”.
Let me tell you something: It looked positively BADASS when they got done with it. It looked like something just off the assembly at FN or Armalite, and after they worked the bugs out of it, it ran flawlessly.
Love that show. Miss it.