World's Smallest Functional Revolver

Talk about your concealed carry gun. This sucker is tiny. It fires a bullet that's a 2.34mm caliber (that's .09 inches), with a muzzle velocity of 426.5 ft/sec. The ballistics are a hoot. Looks like a maximum range of about 120 meters, and it drops below zero at about 37.5 meters. I bet it would sting, though.