What revolutionary product development approach did John Garand use that helped the M1 Garand become the standard-issue rifle for U.S. forces in World War II?

During World War II, the United States military needed an effective semi-automatic rifle that could be mass-produced quickly. The adoption of the M1 Garand represented one of the most successful military product development stories of the 20th century. This rifle gave American forces a significant advantage over enemies equipped with bolt-action rifles. This poll tests your knowledge about how this iconic weapon became such a critical part of American military history and the product development process behind it.

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He designed the rifle to use interchangeable parts manufactured to precise tolerances, enabling mass production with minimal skilled labor
He created the rifle using exotic materials that were only available to the United States, giving them a technological monopoly
He purchased the design from a European weapons manufacturer and simply rebranded it as an American invention
He designed the rifle specifically for elite forces, and it was only later adapted for general military use after proving successful