Yes this is going to sound like something out of the latest Mission Impossible film, but it’s a reality. A user by the name of “HaveBlue” constructed the lower receiver of an AR-15 using a 3D printer. The lower receiver is the section of the weapon that is considered the “firearm” as also has a serial number affixed to it, should it be purchased alone or complete with upper. You could call this a “home brewed AR-15,” and it will definitely get under the skin of gun grabbing liberals like Michael Bloomberg.
What’s interesting is that the lower is made out of ABS plastic. The design called for steel so HaveBlue had to reinforce some of the areas of the firearm. He then printed the design to an older model Statasys 3D printer and used a conversion kit for a .22 pistol.