The world's first gun made with 3D printer technology has been successfully fired in the US. The controversial group which created the firearm, Defense Distributed, plans to make the blueprints available online. The group has spent a year trying to create the firearm, which was successfully tested on Saturday at a firing range south of Austin, Texas. The gun was made on a 3D printer that cost $8,000 (£5,140) from the online auction site eBay. It was assembled from separate printed components made from ABS plastic - only the firing pin was made from metal. Mr Wilson, who describes himself...