Pfannl's work on this pistol was financially supported by Georg Grabner.
In addition to the Kolibri pistol, Pfannl also designed other miniature firearms, such as the 2mm Berloque pinfire rifle.
His firearms were known for their precision engineering and tiny dimensions, which required meticulous craftsmanship.
Despite its low penetration power, the pistol's small size and high velocity still made it potentially dangerous.
The recoil of the Kolibri pistol was virtually nonexistent due to the minuscule size of the projectile, making it an interesting piece both for collectors and firearm enthusiasts.