What unique product design feature of the M1 Garand rifle was famously described by General George S. Patton as 'the greatest battle implement ever devised'?

The M1 Garand rifle represented a significant advancement in military product design that changed the course of 20th century warfare. As the first standard-issue semi-automatic rifle for U.S. forces, it gave American soldiers a distinct advantage during World War II. This poll tests your knowledge about this iconic firearm's product design innovations that influenced military equipment development for decades to come.

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Its en-bloc clip system that allowed for faster reloading than bolt-action rifles
Its tactical scope mounting system that improved long-range accuracy
Its collapsible stock design that made it more portable for paratroopers
Its bayonet attachment mechanism that allowed for quick close-quarters combat conversion