Generally speaking, no, but it depends on what circumstances you are referring to.
You cant.Its illegal to have one in California
Yes, it is illegal to own an unregistered gun in California. State law requires all firearms to be registered with the California Department of Justice, and possessing an unregistered firearm can result in criminal charges. Additionally, California has strict regulations regarding the sale and transfer of firearms, further emphasizing the importance of registration.
Yes it is illegal to own a gun that does not have a serial number. It is also illegal to remove the serial number off a gun.
if a gun has a threaded barrel, (required for a silencer) it is classified as an "assault weapon" and is illegal in California.
It is not illegal to own ammunition but you must have a permit to own a gun.
You can't. Owning a ferret is illegal in California and Hawaii.
yes it is illegal to own a sawed off shot gun in pennsylvania...as far as i know its illegal in every state of the US
No
No
Yes, it is illegal everywhere.
No.
No