Police said Luigi Mangione, the man charged in the killing of UnitedHealthcare CEO Brian Thompson, appears to have had a ghost gun, a weapon that can be made using a 3D printer.

Ghost guns have no serial numbers ... requiring all gun kits and other key gun parts to include serial numbers, to only be sold by licensed gun dealers and for buyers to to be subject to a ...

Ghost guns are typically assembled at home using parts, kits or even pieces printed ... serial numbers and that people who buy them from dealers be subject to background checks.

They also require that federally licensed firearms dealers perform ... and selling weapons kits for home assembly. Because they lack serial numbers, ghost guns aren’t easily traceable.

the firearms dealer and original purchaser. Ghost guns, however, are made of parts that the owner can assemble together. The critical component in building an untraceable gun is what is known as ...

Police say the suspect had a ghost gun, possibly made with a 3D printer, when he was arrested on Monday. Here's what to know about the increasingly widespread weapons and efforts to regulate them.

Federal law requires licensed firearms dealers to conduct background checks ... announced a federal rule that would clarify that ghost gun parts qualify as traditional firearms, and manufacturers ...