M4A4 VS M4A1-S

The M4A4: is an all-around great weapon. It has a higher fire rate and higher accuracy compared to the AK-47, but sacrifices raw damage and a one-tap headshot against armored opponents.
The M4A1-S: may sound inferior in certain areas. It has a fire rate that of the AK-47, but with lower damage and armor penetration, it has hardly any ammo in its magazine and also in reserve, but in-game, when playing to the gun's strength, it can be a very strong rifle, even among compelling rifle choices.