MODERN WARFARE FIELD GUIDE

Call of Duty 4 Perks

All 22 original multiplayer perks, grouped by tier, with short effects and unlock levels.

Equipping perks

Choose one perk from each of the three tiers. Create-a-Class unlocks at Level 4; earlier perks appear in default classes. Grenade Launcher and Grip replace the Tier 1 slot but are weapon attachments. These are the original perk effects and unlock levels.

Tier 1 Perks

Multiplayer

C4 x2

Carry two remotely detonated C4 charges.

Unlock level: 1

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Multiplayer

RPG-7 x2

Equip an RPG-7 with two rockets.

Unlock level: 1

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Multiplayer

Special Grenades x3

Carry three flash or stun grenades. Smoke grenades do not receive this bonus.

Unlock level: 1

Only flash and stun grenades receive three charges.

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Multiplayer

Bomb Squad

See nearby enemy explosives marked with icons.

Unlock level: 14

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Multiplayer

Claymore x2

Carry two directional proximity mines.

Unlock level: 23

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Multiplayer

Bandolier

Start with extra reserve ammunition for your guns.

Unlock level: 32

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Multiplayer

Frag x3

Carry three fragmentation grenades.

Unlock level: 41

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Tier 2 Perks

Multiplayer

Stopping Power

Increase bullet damage.

Unlock level: 1

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Multiplayer

Juggernaut

Reduce incoming bullet and explosive damage.

Unlock level: 1

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Multiplayer

Sonic Boom

Increase explosive damage.

Unlock level: 1

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Multiplayer

UAV Jammer

Hide your position from enemy UAV scans.

Unlock level: 11

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Multiplayer

Sleight of Hand

Reload weapons faster.

Unlock level: 20

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Multiplayer

Double Tap

Increase your weapon’s firing rate.

Unlock level: 29

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Multiplayer

Overkill

Carry a second primary weapon instead of a pistol.

Unlock level: 38

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Tier 3 Perks

Multiplayer

Deep Impact

Improve bullet penetration through surfaces.

Unlock level: 1

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Multiplayer

Extreme Conditioning

Sprint for twice as long.

Unlock level: 1

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Multiplayer

Steady Aim

Improve accuracy when firing from the hip.

Unlock level: 1

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Multiplayer

Last Stand

After eligible fatal damage, fall onto your back and fire a pistol before bleeding out.

Unlock level: 8

Teammates cannot revive you. Certain types of kills bypass Last Stand.

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Multiplayer

Martyrdom

Drop a live frag grenade when killed.

Unlock level: 17

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Multiplayer

Iron Lungs

Hold your breath longer while using a sniper scope.

Unlock level: 26

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Multiplayer

Eavesdrop

Hear the voice chat of nearby enemies.

Unlock level: 35

Not available in Wii Reflex, which has no online voice chat.

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Multiplayer

Dead Silence

Make your footsteps quieter.

Unlock level: 44

Game reference · Picture source

Edition notes

Original Call of Duty 4: Modern Warfare (2007), its PC/Mac editions and original console maps. Wii Reflex (2009) shares the campaign and launch maps, with differences noted. Modern Warfare Remastered, the 2019 reboot and the separate DS game are outside this guide.

Eavesdrop is absent in Wii Reflex, which has no online voice chat. Last Stand allows a final pistol attack; teammates cannot revive its user.

References

Covered edition: Original Call of Duty 4: Modern Warfare (2007), its PC/Mac editions and original console maps. Wii Reflex (2009) shares the campaign and launch maps, with differences noted. Modern Warfare Remastered, the 2019 reboot and the separate DS game are outside this wiki.