Yes

Yes. See the link below for more information.

Photographs are automatically protected by copyright, and notification is not required. Imprints such as the studio name are simply helpful in tracing ownership.

If you mean copied, yes, although you may be on the wrong side of copyrighted ownership. If you mean shot, I would not recommend it unless you have a permit for the gun valid for the location of the shooting.

Copyright protects original works of authorship including literary, dramatic, musical, and artistic works. It can include poetry, novels, photographs, drawings, movies, songs, computer software, and architecture.