The Scar rifle is one of the most powerful guns in the game, Although riticuled 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 Machinegun. (80 dmg output)
Most believe its accuracy and reletivly low recoil is a factor contributing to the fact it is overpowered for an assult rifle. And on top of that they can be fitted with a silencer and sniper scope which adds onto the dislike of it.