I am (gulp!) of an age to remember 'Cade's County' (in first- and probably only-run)...but while I recall the likes of, say, yet another of William Shatner's low-key and nuanced performances...I confess I don't recall the Thompson submachinegun!
That having been said, it's excellent work!
Were the insignia part of a kit release, or sourced elsewhere?
[Nevermind...I found the answer in your post on modelcarsmag!]