ACOG

The ACOG is a scope with a 4x zoom.
The ACOG is based off of the Trijicon ACOG 4x32 rifle scope. The ACOG features a fixed 4x zoom and can attach to any picatinny mount.
Try to avoid using this sight if you can, this sight along with the other two magnified sights are harder to see when at mid-range due to them being dark. If you are planning to use an ACOG, make sure to bring a flashlight.