There are a variety of materials that weapons can be made from, including metal, plastic, wood, and even glass. The type of material that is used for a weapon will often depend on the intended use of the weapon. For example, metal weapons are often used for melee weapons such as swords, because metal is strong and can withstand a lot of force. Plastic weapons are often used for firearms, because plastic is light and easy to mold into the desired shape. Wood weapons are often used for bows and arrows, because wood is flexible and can be bent into the desired shape. Glass weapons are often used for knives, because glass is sharp and can easily cut through flesh.