在穿越火线手游中的背包中唯一不能卸下的武器小刀，虽然它的伤害力并不高，但是通常是玩家们使用狙击枪时切换的武器，下面一起来了解下小刀吧！
in through the FireWire travel backpack is not the only unloaded weapons knife, although its harm is not high, but is usually players using a sniper rifle to switch weapons, following up the solution under the knife!
