German Luger pistol, 1904 model, 9 mm (0.35") Parabellum caliber. It has a detachable loading feed that can fit 8 cartridges, and is a semi-automatic weapon, recoil-operated with toggle lock action and short recoil. It has a safety mechanism on the side lever and a button on the handle. The Luger Kaiserliche Marine was the third model made by the German designer George Luger. The first, in 1900, and the second, in 1902, were both 7.65 mm (0.3") Parabellum. The 9 mm Parabellum was the greatest innovation of this weapon compared to its forerunners. It marked a real milestone in calibers, which is why it was also known as the “9 mm Luger.” It was the regulation pistol of the German Imperial Navy until almost the end of the Second World War. Two minor adaptations were made before 1908 that mainly affected the recoil spring. It is differentiated from the legendary P-08 by its longer barrel and the button safety on the handle. However, few examples managed to survive the two World Wars.