The first successful gas-operated machine gun was a 'potato digger'

History · Published 19 October 2026 · Updated 20 October 2026 Swipe more like this →

In short: In 1895, the Colt–Browning changed warfare forever. It was the first machine gun to use expanding gases to cycle its action, replacing manual cranking with automated power. Yet, its unique design gave it a nickname that mocked its tendency to strike the earth during low-angle fire.

Designed by John and Matthew S. Browning in 1889, the M1895 was a revolutionary leap from lever-action rifles like the Winchester 1886. Unlike earlier designs where an operator rotated a handle to eject rounds, the 'potato digger' used the explosive energy of the bullet itself. As gas escaped through a port in the barrel, it pushed a plug and lever that moved in a front-to-back arc—essentially a mechanical reversal of a standard rifle's motion.

The mechanism featured several engineering firsts, including a tilting bolt to lock the breech. To manage the intense heat of sustained fire, the gun utilized a heavy straight barrel weighing 35 pounds (15.8 kg). While this allowed for air-cooling—making it lighter and more portable than water-cooled rivals—it created a dangerous 'cook-off' risk. Testing showed that after firing over 1,000 rounds, the barrel would become so hot that four or five additional rounds would fire spontaneously as they sat in the chamber.

The weapon saw global service across diverse theaters. It was used by U.S. Marines during the Spanish–American War and by Canadian troops who earned Victoria Crosses using it in the Second Boer War. However, its reliability was debated; while some found it accurate, Theodore Roosevelt famously noted that his Rough Riders' privately purchased units were 'delicate' and frequently broke down compared to heavy Gatling guns.

By 1914, the M1895 reached its peak variety, being chambered in calibers for Russia, France, and South America. Despite its importance as the first machine gun adopted by the U.S. military (though never formally), it was considered obsolete by World War I. Colt ceased production in 1916, selling the rights to Marlin Rockwell to fulfill remaining international contracts.

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