Ghost gun

A ghost gun is a firearm without serial numbers. The term is used by gun control advocates, gun rights advocates, law enforcement, and some in the firearm industry. By making the gun themselves, owners may legally bypass background checks and registration regulations. Under U.S. federal law, the creation and possession of ghost guns is permitted, but a license is required to manufacture firearms for sale or distribution.

Question: can you own a gun without serial number
Answer: yes