The M150 is an Advanced Combat Optical Gun sight (ACOG) designed for the US military's M4 and M16 weapon system. It incorporates dual illumination technology using a combination of fiber optics and ...

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The ACOG (Advanced Combat Optical Gunsight) is a United States scope with 4x magnification compared to the iron sights. The ACOG (4x) falls in the Optics Category of the Weapon Accessories.