11mm Pin fire
9x19, or 9mm Luger was introduced 1902 with the German Luger pistol. The caliber soon gained ground in almost the entire world as a pistol and sub machine gun ammunition. It arrived in Sweden about 1938 together with pistol m/39 and sub machine gun m/37-39 and is still used in sub machine gun m/45B and pistol m/88. The tracer rounds used in Sweden is only for practice weapons for Pskott and GRG.
The first years of supply was probably not made in Sweden. I’m not sure, but I have never seen a Swedish case made before 1941, so my guess so far is that the first years were imported from USA, Germany and Finland. The ammunition is effective against personal targets up to 200 meters.