4 Things Anti-Gunners Fail To Understand About 'Ghost Guns'
With all of the hype surrounding 3-D printed guns, there are a few things that the general public does not know about these so-called "ghost guns," which do not have a serial number. Ghost guns can include an 80 percent lower as well as 3-D printed guns. That means that a non-plastic piece that is 80 percent finished can be used to produce the gun.
Defense Distributed and other companies sell these 80 percent lowers, which are literally the bottom part of the gun. This is most commonly seen with AR-15s where people custom build their rifle. They combine the lower and the printer is then used to finish the gun with various pieces, like a slide.