Kolibri Pistol

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2mm Kolibri pistol with a US penny for scale - 2.7x9mm Kolibri

The Kolibri Pistol is the smallest centrefire semi-automatic in the world. Invented by Austro-Hungarian watchmaker Franz Pfannl, it was produced from 1913 to the mid-1920s in both single-shot and magazine-fed variants. Since technology of the time could not drill rifling into such a small barrel, it is a smoothbore. About 1,000 were made, with the gun primarily selling as a novelty.

The Kolibri's 2.7mm round is the smallest centrefire cartridge ever commercially produced, with the 3 foot-pound muzzle energy around half the UK limit for an airgun to be considered a firearm. The combination of pathetic muzzle energy and the smoothbore barrel rendered the Kolibri extremely inaccurate and practically useless as a weapon. Reloading the magazine generally required the use of tweezers.

It is not the world's smallest working gun: even more ridiculously tiny "weapons" exist, such as 2mm pinfire pistols (most of which can be stored inside a matchbox) and the 2.34mm rimfire SwissMiniGun Miniature Revolver C1ST (the latter having 0.71 foot-pounds of muzzle energy, less than the 1 foot-pound required for a bullet to actually inflict a penetrating injury). Most such firearms are impossible to import into the US due to the minimum dimension requirements of ATF Form 4590.

Specifications

(1913 - 1920s)

• Type: Pistol
• Caliber: 2.7x9mm Kolibri
• Weight: 0.5 lbs (0.2 kg)
• Length: 2.8 in (7 cm)
• Barrel length: 1.4 in (3.5 cm)
• Capacity: 6 rounds
• Fire Modes: Semi-automatic only

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The Kolibri Pistol and variants can be seen in the following films, television series, video games, and anime used by the following actors:

Film

Title	Actor	Character	Notation	Date
The Doll With Millions (Kukla s millionami)	Igor Ilyinsky	Pierre Cuisinai		1928

Video Games

Title	Appears As	Note	Date
Battlefield 1	Kolibri		2016