WWII - he with the most natural resources wins....
The biggest problem the Japanese faced during WWII was a lack of raw material. This forced them to make cuts in a lot of their manufacturing processes as the war continued. One area was in the production of small arms. at first the quality of the workmanship suffered - then things were simplified.
This is a Nagoya 10th Series Substitute Rifle; aka a "Last Ditch" gun. Not only has fit and finish suffered but so did manufacturing processes. For one the rear sight went from being fully adjustable and having "wings" to lead aircraft. Welded joints suffered too!
