Tremaine Jones, who is charged with shooting two Milwaukee police officers, killing one, purchased a key part of the rifle ...

The Gun Control Act of 1968 defines a "firearm" as any weapon which is designed -- "or may readily be converted" -- to expel a projectile. It also explicitly includes "the frame or receiver of any ...

FILE — Ghost guns are displayed at the headquarters of the San Francisco Police Department, in San Francisco, Nov. 27, 2019. (AP Photo/Haven Daley, File) FILE — Ghost guns are displayed … ...