As a dedicated Warzone player with years of competitive experience, I've tested countless setups. The AK-74u stands out as a top secondary SMG in Season 3, excelling in mid-range fights with minimal recoil and high mobility.
This Modern Warfare-inspired SMG shines when paired with primary weapons, letting you quickly finish off weakened foes. Here's my proven AK-74u loadout, refined through extensive gameplay.

This build has evolved over recent patches and performs exceptionally in Season 3.
GRU Suppressor: Boosts damage range like the Monolithic Suppressor, hides you from the minimap, and improves vertical recoil control, bullet velocity, and range.
9.3″ Reinforced VDV Barrel: Extends damage range for mid-range effectiveness. For even more reach, consider the 18.2″ version, which doubles effective range and velocity.
KGB Skeletal Stock: Enhances mobility and ADS speed, crucial for dodging fire and countering quickly.
Spetsnaz Speedgrip: Minimizes vertical and horizontal recoil for precise shots, plus boosts horizontal control and sprint speed.
40 Rnd Drums: Provides ample ammo without sacrificing much ADS or movement speed (only affects reload). Swap to 60 Rnd if needed.
Recommended Perks: Double Time, Overkill, and Amped to maximize this loadout's potential.
Reach level 19 in Warzone or Black Ops Cold War. It's quick— a few hours of play, especially with Double XP tokens or events.