Yesterday police in Newburgh NY [highest crime rate in NY state] caught a BG with a Sten gun !! That was a surprise ,you don't see many of those these days. The British SMG in WWII, reliable , durable and low cost to make.
Cost is significant during wartime and the M3 was much cheaper to make than the Thompson. Sheet metal parts can be made by any company that makes sheet metal propducts. A few years ago History Channel had an interesting film made by the Danish resistance .They were making SMGs in a toy factory right under the noses of the Germans !!
