In multiplayer, the AK-47 can be modified with the Red Dot Sight, ACOG scope, GP-25 Grenade Launcher, and silencer. One of the flaws of this rifle is that attaching a silencer or Red Dot Sight reduces the damage from 40-30 to 40-20, making it considerably worse than other assault rifles. Also, the AK-47 has the same sway amount as the M4A1 and same sway speed as the G36C. The AK-47 is also one of the six Golden Weapons.

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In Call of Duty 4: Modern Warfare, the AK-47 can be picked up by the player in single player mode and is the most frequently used enemy weapon of the game by both Ultranationalists and OpFor militants. It is far superior in terms of firepower and penetration when compared to most other rifles in the game, and it keeps an open field of view for spotting other targets nearby, although it suffers more in terms of recoil. It is important to note that the AK-47's recoil is purely visual (as it resets right back on the target before the next shot). The AK-47 is effective at medium range. In single player, the player may occasionally encounter a variant of the AK-47 called the AK-47 Grenadier, a standard AK-47 modified with an under-mounted GP-25 grenade launcher, functioning similarly to the M4A1 with an attached M203 grenade launcher. Oddly, the AK-47 Grenadier has a max ammo of 308 instead of 300. This means that the AK-47 Grenadier has one extra magazine that only holds 8 rounds, the purpose of this is not known
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