The Supreme Court on Wednesday upheld a Biden-era regulation on "ghost guns," — untraceable, easy-to-assemble firearms — ruling that they are subject to background checks and other requirements. Gun ...

Inflation is passed along and used as an excuse by many industries to increase profit margins. Gun and ammunition firms, on the other hand, have been bucking that trend for decades.

The modification alters the gun's firing mechanism, allowing it to fire multiple rounds with a single trigger pull. The devices can be made on a 3D printer in about 35 minutes and are cheap to produce ...