Luger pistol
The Luger pistol was accepted by the Imperial German Navy in 1904 in 9mm Parabellum as the "Pistole 04" (P04). The navy model had a barrel and a two-position - or - rear sight. This version was also referred to as the "Marine Modell 1904" or, more colloquially in the US as the "navy Luger". The Pistole 04 was later updated with a coil mainspring to Model 1906 pattern as Luger continued to refine and improve his design.