Luger pistol
The 7.65×25mm Borchardt was also the basis of the 7.65×21mm Parabellum and 9×19mm Parabellum cartridges developed for the Luger pistol. The shorter case length of the 7.65×21mm Parabellum allowed for improvements in the Luger pistol, including a shorter stroke in the toggle mechanism as well as a smaller grip. The same shorter length of cartridge was maintained when the design transitioned to the 9×19mm Parabellum.