Just about any you can think of
Depending on the guns- steel, brass, aluminum, copper, nickel, other metals, wood, and various plastics.
Gunpowder NEVER WAS used to make guns.
Spyder uses a few different types of metals. They mostly use aluminum in their guns. Though to make it lighter they use a composite plastic that is durable yet light.
Steel and aluminum are used to make funs.
Aluminium.
The two most common metals used to make knives are steel and iron.
Depends on the exact gun. Steel, composite metals, aluminum, and polymers are all used for various types of firearms.
Metals are used for the production of screws as they are materials with high hardness and resistance to stress.
Iron, nickel, and cobalt are the most common metals used to make ferromagnets. These metals have magnetic properties that allow them to be easily magnetized and retain their magnetism.
Lead
alloys
bamboo and rope