How hard and how expensive is manufacturing firearms and their ammo? Assuming I designed the most simple, easy to manufacture and reliable submachinegun chambered in 9mm (that I would manufacture) what would the longevity be if I paid 200 dollars for the materials and labor and profited 200...

Hey all! Just letting you know I'm here and looking forward to getting involved. I can't wait to see what I can learn and maybe I can do some teaching too. I grew up around guns and am a strong supporter of the right to keep and bear arms as well as all the other rights that we seem to be...