2.34mm long pistol is the world 's smallest fully-functioning revolver . Tiny gun fires purpose-made bullets that are just Two-inch in diameter . Weapon was created by Paul Erard in the Swiss city of La Chaux-de-Fonds . Each gun costs a staggering £300,00 to make - but is on sale for just £4,500 . But new owners will require gun and export licences before they can buy it .
Two-inch long pistol is the world 's smallest fully-functioning revolver . Tiny gun fires purpose-made bullets that are just 2.34mm in diameter . Weapon was created by Paul Erard in the Swiss city of La Chaux-de-Fonds . Each gun costs a staggering £300,00 to make - but is on sale for just £4,500 . But new owners will require gun and export licences before they can buy it .