The 2 mm Kolibri (also known as the 2.7 mm Kolibri Car Pistol or 2.7 x9 mm Kolibri) is the smallest commercially available centerfire cartridge, patented in 1910 and introduced in 1914 by Franz Pfannl, an Austrian watchmaker, with financial support from Georg Grabner.
The 2 mm Kolibri (also known as the 2.7 mm Kolibri Car Pistol or 2.7 x9 mm Kolibri) is the smallest commercially available centerfire cartridge, patented in 1910 and introduced in 1914 by Franz Pfannl with financial support from Georg Grabner. Franz Pfannl is an Austrian watchmaker.