Sorry- that depends on the gun. No one answer.
Its about alot of things
If you mean what type of steel are guns made from, it depends. Some cheap guns aren't even made from steel, but instead some sort of cheap pot metal.
Yes
They are mad from steel.
Steel
Steel and brass.
At least in part, yes.
guns, germs, and steel
Iron or steel.
Guns Germs and Steel - 2005 Out of Eden 1-1 was released on: USA: 2005
Guns Germs and Steel - 2005 Conquest 1-2 was released on: USA: 2005
In APA format, the citation for Jared Diamond's book "Guns, Germs, and Steel" would be: Diamond, J. (1999). Guns, Germs, and Steel: The Fates of Human Societies. New York: W.W. Norton & Company.