Today's item is an example of the smallest centerfire pistol ever made - a 2.7mm Kolibri semiauto. About a thousand of these were made between 1910 and 1914, firing a 3-grain projectile at about 650 fps (for a total of 3 ftlb of muzzle energy). It may be insanely impractical, but it's a great piece of mechanical art - and it comes with 7 rounds of ammo!