The best M4 build in Modern Warfare 4

The best M4 build in Call of Duty: Modern Warfare 4 is one of the most reliable choices in the game, and if you've been playing Call of Duty games for a while, that should come as no surprise. The M4 has always been the jack-of-all-trades assault rifle, capable of handling any combat situation, whether it's at long-range, up close, or somewhere in between.