Untraceable, unregulated and easy to build: Colorado and the increasing popularity of 'ghost guns'

Buying a gun in Colorado means jumping through plenty of rules and regulation hoops, right? Not necessarily. Denver7 has found anyone can buy gun parts online and relatively easily put them together at home. Do-It-Yourself (DIY) weapons are on the rise here. They don't require a background check, they're completely untraceable and you they can be bought online — almost assembled.