What revolutionary product development feature made the M1 Garand rifle superior to bolt-action rifles when it was introduced as the standard U.S. service rifle in 1936?

The development of military equipment has often revolutionized warfare throughout history. One particular rifle changed the face of infantry combat during World War II by offering unprecedented firepower to the average soldier. This poll tests your knowledge about product development in military history and how innovative design choices impacted battlefield effectiveness.

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Semi-automatic operation with an 8-round en bloc clip system allowing rapid fire without manually operating the bolt
Lightweight aluminum construction that reduced soldier fatigue during long marches
Integrated telescopic sight as standard issue for improved accuracy at long ranges
Modular design allowing field conversion between different caliber ammunition types