User blog comment:JoeRamirez/Call of Duty Modern Warfare 3 Weapons Wishlist./@comment-75.70.137.240-20110327002548/@comment-3216219-20110327235554

tracers are just bullets that have a type of phosphorus (i think it's a white phosphorous) that can give the person who is using the gun the ability to see where his bullets are going, especially during the night. So i think that would be a useless attachment. In my opinion.