You lucky forumers should watch BBC2 at 7pm (that's 1900 hrs...) at a programme about master pieces of design and simplification. They research and shoot a Mk3 Sten gun, made by toy makers Lines Brothers. They didn't know much about making guns, but they certainly knew how to punch, press, fold and fabricate. And if you ever had a Raleigh bike as a boy, they made them too!
It's an Army one from Warminster.