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.

has called ghost guns “the fastest growing gun safety problem in the country.” “Buy-build-shoot” kits are essentially pre-manufactured, dissembled, complete firearms,” according to the U ...

to put serial numbers on their partially complete gun frames and to run background checks on their clients. It is aimed at so-called ghost guns, untraceable weapons that lack serial numbers and can be ...

Users could then utilize tools or a 3D printer to complete the kit by building their own receiver or frame, creating a usable and untraceable gun. Over the past decade, ghost guns have been used ...

Kits for ghost guns can be purchased online or at gun shows ... the frames or "receivers" of such guns can be sold 80% complete. The other components required to build a functioning firearm ...

Ghost guns are firearms that are assembled by using kits or parts produced by a 3D ... pass a law ensuring that the finished firearm has a complete serial number, though the group has not released ...

Kits for ghost guns can be purchased online or at gun shows ... the frames or "receivers" of such guns can be sold 80% complete. The other components required to build a functioning firearm ...

Ghost guns, also known as privately ... Buy-build-shoot kits are weapon parts kits that are essentially pre-manufactured, [disassembled], complete firearms (a firearm in a box)," the U.S ...