The original purpose of these knives is the same as of Bayonet – to be mounted on rifles. The difference between these two knife types is in the blade shape. M9 Bayonet has big and dangerous saw teeth. In CS:GO, cosmetic M9 Bayonet skins have been introduced with the Arms Deal update. Like all the other CS:GO knives, this type is extremely rare, almost impossible to obtain in the game. There is a much easier way – buy the best M9 Bayonet skins on DMarket and surprise both teammates and opponents.