Very interesting, thank you all.
I've always like precision machines, especially smaller simpler ones. Wind up watches, sewing machines and semi automatic weapons. As a Coast Guardsman and a police officer I carried, cleaned and trained on such guns. We were still using the .45 in the eighties. On the topic of corporate production, we were also using guns and ammunition made during WWII. While aboard one ship in the shipyard, we received a new 3" deck gun (cannon) still greased, built in 1942 by General Motors.