Building the weapons systems would be much more costly, but what if we had like engineers who could actually fabricate specialized parts? My Girlfriend's Dad (who was in charge of a strike fighter fleet -not an appeal to authority here) was talking about this specific part of landing gear on the hornet- it had a fault and developed cracks after several years of use. The company that originally manufactured the part had moved onto something else and couldn't make it. Anyways, they ended up buying a couple hundred units of this landing gear from Israeli manufacturers with a huge markup... wouldn't something like this be better for the military to do? Or is it too specialized that they couldn't possibly maintain certain parts?