In May, California — through the County of San Diego's Office of County Counsel — sued Texas-based companies Defense Distributed, Coast Runner Industries and Ghost Gunner for making computer numerical ...

“Ghost Gunner” brand CNC mills (both containing aluminum shavings) • 25 (twenty-five) serialized AR-15 style lower receivers Machamer is charged with possession of a firearm with an ...

The upper receiver includes the barrel and the handguard. He also used a specialized machine called a “Ghost Gunner,” which links to a computer and can make lower receivers without serial numbers.

The lawsuit said the machine uses a different software platform and power supply than another milling device, the Ghost Gunner, that was made by Wilson’s company Defense Distributed and marketed ...

The Ghost Gunner 2, Defense Distributed's updated mill, reportedly costs under $1,500, and is already sold out for 2018. A $250 deposit reserves a place on the list for the next batch of machines.