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

These images show the world's smallest working gun - which is shorter than a matchstick and fires purpose-made bullets just 2.34mm in diameter.

Created by artist Paul Erard in the Swiss city of La Chaux-de-Fonds, the petite pistol measures just two inches long but fires with one joule of power.

The gun currently holds the Guinness World Record for the smallest working revolver, and the bullets it fires - which were designed specifically for the gun by Mr Erard - also appears in the book as the tiniest live ammunition ever created.