The gas-operated machine gun, which uses gas pressure vented from the barrel during firing to operate the reloading mechanism, was invented several years later by American inventor John Browning. Browning introduced this new principle in the Model 1895 Browning 'potato digger' machine gun. | The gas-operated machine gun, which uses gas pressure vented from the barrel during firing to operate the reloading mechanism, was invented several years later by American inventor John Browning. Browning introduced this new principle in the Model 1895 Browning 'potato digger' machine gun. |