The ACOG Scope can be used on any Assault Rifle (excluding the MP44), Light Machine Gun, Sniper rifle, or Submachine Gun after the player has unlocked all Marksman Challenges for it (150 Kills). It can also be used on a Sniper Rifle instead of its standard telescopic sight after 100 kills. When equipped, it replaces the weapon's iron sights or sniper scope and provides a moderate zoom. Effective bullet range is not actually affected by this attachment, despite the bar in the class creation screen. The reticle is a red chevron.