You need to see the police.
Depending on what you mean by "trace", the answer could be yes or no.
It involves searching records. In a perfect world it would go like this: You commit a crime and get caught. The sn on your gun is given to various agencies who trace it. The manufacturer can tell when it was made and who they shipped it to. Who it was shipped to can tell who they shipped it to or who they sold it to. You bought it legally and committed a crime with it. Easy trace. In the real world, once you find who it was originally sold to then the real searching begins. The original owner could be dead, trace ends. The original owner could have legally disposed of it and doesn't remember to who, trace ends. Original owner could have disposed of it illegally, trace ends. You get the idea...
File a police report.
Sometimes yes, but not always.
Contact the maker.
You can't. Only a LEO or LEA can.
this automatic gun looks like..........your face! why would you ask me????????
In forensics, GSR stands for Gun Shot Residue. The trace chemicals that are left on someone after they have fired a gun.
Sometimes. The firing pin and extractor may leave marks on an ejected shell that can be matched to a gun.
Blue Book of Gun Values
your would get them like any other person go to a gun shop and purchase them.
Any gun that shoots, cause its not like nazi zombies.