This rare original US Army WWI-era Remington-UMC box of 40 .30 Auto Pedersen Device cartridges is an exceptional piece of early 20th-century military innovation! These unique rounds were developed specifically for the secretive and ambitious Pedersen Device—an attachment that could instantly convert a standard M1903 Springfield rifle into a semi-automatic carbine. Packed neatly in the original military-style box, this lot offers a glimpse into one of the most fascinating "what-if" chapters of American arms development. With the Pedersen Device never widely deployed before the end of the war, surviving ammunition like this is extremely scarce and highly sought after by collectors.

Whether you're a military historian, a World War I collector, or a fan of rare experimental ammo, this box is a showstopper. The label is clear, the packaging authentic, and the historical significance undeniable. It’s more than just ammo—it’s a tangible link to a bold wartime innovation that nearly changed the course of infantry combat. This is the kind of item that doesn’t come around often—don't miss your shot at owning a rare relic from the dawn of American semi-auto warfare!