The Scar rifle is one of the most powerful guns in the game, Although ridiculed by much of the overall gaming community in most FPS games. You will undoubtedly be called a "Scar noob" endlessly.
The scar does similar damage of that of a Light Machine Gun. (80 damage output)
Most believe its accuracy and relatively low recoil is a factor contributing to the fact it is overpowered for an assault rifle. And on top of that they can be fitted with a silencer and sniper scope which adds onto the dislike of it.