The ACOG (Advanced Combat Optical Gunsight) Is a series of fixed power sights used by many military forces around the world. The ACOG was originally designed to be used on the M16 Rifles and M4 Carbines.
The models provide fixed power magnification levels from 1.5× to 6×.
Acog stands for "Advanced Combat Optical Gunsight". It's a scope with a zoom from x1.5 to x6 depending on models and is used on assault rifles and other kinds of weapons. Also is sometimes avaiable as an attachment in some videogames
Today i'm gonna try the ACOG on this smg, never used it before.