Best Assault Rifle in Warzone! (M4A1 vs Grau 5.56)

The M4A1 and the Grau 5.56 have risen to the top of the assault rifle meta within Warzone so today I wanted to put them side by side and break down their stats to find out which one is best! Which of these assault rifles do you think is best in Warzone?

AX-50 vs HDR: https://youtu.be/95OePyvXGcQ

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