Ammo Scavenger is a weapon mod in Deus Ex: Invisible War. When it is activated on a weapon, the weapon in question will use up less of the player's Universal Ammo, at no penalty. This mod can be used well on any weapon, though it is best used on a weapon the player will use the most throughout the game. Barring this, the mod is best used on heavier weapons that use a lot of ammo, namely the sniper rifle and rocket launcher, which use as much as half a magazine of ammunition for just one shot. This mod is extremely rare, less than five are found in the entire game.