Depends on the maker.
Some gun barrels are the finest quality type 4140 chrome moly or 416 stainless steel with button rifling.
Hi-Point pistol frames are made from a high-impact polymer and barrels are from an alloy stainless steel.
steel
Iron and steel
Yes
Normally, steel.
The Maxim suppressor was made of steel.
Steel
SteelSteel
Typically steel or aluminum
bbs are made out of steel and pellets are made out of lead
Different types include steel, stainless steel, titanium, aluminum
The barrels will usually be made of steel. The remainder of the gun.. depends on which gun you had in mind. The receivers may be made of steel, they may be made of aluminum, they may even be made of polymer.
barrel and action is steel, The other parts can be wood or some type of fiber. Comsosite plastic, fiberglass is the make up on some.