Thompson 1928A Barrel
grabcad
UPDATE: I have now added a pdf file of the full set of arsenal blueprints. If you download, please do me the favor of liking. This is a step file of a Thompson 1928A finned barrel. This is one of the iconic features of the Tommy Gun. Later on, when the Thompson went through some cost cutting and manufacturing simplifications as part of the war effort, they lost the cooling fins and just doesn't look the same. This model is pretty detailed and includes the square barrel threads and Cutts compensator threads, rifling (appropriate twist, lands and grooves) as well as .45 ACP chamber features. Made from WWII arsenal blueprints... Enjoy and let me know your thoughts.
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