Best Field Upgrades In Call Of Duty: Modern Warfare 3

Field Upgrades are useful tools in Call of Duty: Modern Warfare 3. They help you hold down objectives, assist your teammates, or get yourself out of sticky situations. They aren’t available every time you respawn, like lethal and tactical equipment, though, so you’ll need to use them wisely.




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That means picking your timings and ensuring you are equipped with the best Field Upgrades available. There are just under 20 available in Modern Warfare 3. Each one isn’t necessarily worth a spot in your loadout. Only the best of the bunch work well in nearly every situation you will find yourself in.

10 Munitions Box

Stock Back Up

The Munitions Box in the armory of Call of Duty: Modern Warfare 3.

The Munitions Box is a helpful Field Upgrade. If you survive for a while throughout a game of MW3, you are bound to run out of ammo. This box remedies that for you and your teammates.

Pull it out and place it down in front of you. You and any ally can interact with it to refill your ammunition and equipment. This will ensure you can keep firing and replenish your grenades to hold down the fort.

9 Deployable Cover

Block Those Shots

The Deployable Cover in the armory of Call of Duty: Modern Warfare 3.

At level 22, you can utilize the Deployable Cover. It does exactly what you think it would. It’s a portable piece of cover that rapidly deploys. It can be broken, but a lot of damage has to be done for it to crumble.

It has multiple uses. You can drop it block enemy gunfire or prevent explosives from doing maximum damage. Or you can set it in a doorway or hallway to create an obstacle that prevents enemies from moving forward.

8 Smoke Airdrop

Smoke Them Out

The Smoke Airdrop in the armory of Call of Duty: Modern Warfare 3.

The Smoke Airdrop is available after you reach level 51. If you don’t want to use a Smoke Grenade as your tactical equipment item, the airdrop is a great replacement. It doesn’t just drop one smoke, but a whole line of smoke.


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Call in the airdrop to see a line of drones approach. They’ll deploy the smoke wall at whatever location you choose. The targeted area will be covered in smoke, preventing anyone from seeing through it for a good amount of time.

7 Suppression Mine

A Non-Lethal Mine

The Suppression Mine in the Call of Duty: Modern Warfare 3 armory.

The Suppression Mine is one of the best tools to disrupt enemy movement in Call of Duty: Modern Warfare 3. You can unlock it after doing five Armory Unlock challenges. Essentially, it is a trip mine that doesn’t cause any damage.

Instead, it delivers an awful wave of noises when triggered. It slows movement and blurs enemy vision when in the vicinity. This mine is on the larger side, however, so it could be easy to spot if not hidden around a corner.

6 Anti-Armor Rounds

Rip Them To Shreds

Anti-Armor Rounds and how to unlock them in the Armory Unlocks section of Call of Duty: Modern Warfare 3.

Anti-Armor rounds boost the firepower of your weapon. Complete five Armory Unlock challenges to obtain that extra firepower. It applies anti-armor to your ammunition and you’ll be able to tell how many shots are left until you run out.

The rounds work against a multitude of targets. It will do bonus damage any armored personnel. That includes vehicles, equipment, and body armor. It also shreds through penetrable cover much easier than normal ammo.

5 Heartbeat Sensor

Nowhere To Hide

The Heartbeat Sensor in the armory of Call of Duty: Modern Warfare 3.

A massive eight Armory Unlock challenges are required to obtain the Heartbeat Sensor. That makes sense, considering how effective it has been in past Call of Duty titles. That is also why it is simply a good Field Upgrade choice rather than a great one.

It used to be a tactical item you could use at any time. Now it comes with limited use as the Field Upgrade. Pull out the tablet and you’ll be able to monitor the heartbeats of nearby enemies. It will ping their location if you spot them while looking their direction.

4 A.C.S.

A Hacker’s Dream

The A.C.S. in the armory of Call of Duty: Modern Warfare 3.

A.C.S. stands for Automated Computer Spike. Unlock it at level 28 in Call of Duty: Modern Warfare 3. This is a Field Upgrade that allows you hack into nearby equipment and even begin capturing points from a distance.


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You can make enemy devices work for you. Or you can set it down on a capture point in a number of modes. The modes where the A.C.S. can capture the objective are Domination, Hardpoint, Control, and Ground War.

3 Dead Silence

For All You Ninja Defusers

The Dead Silence in the armory of Call of Duty: Modern Warfare 3.

Dead Silence returns in MW3 as a Field Upgrade. It requires eight Armory Unlock challenges. Once you do so, you’ll have the fan-favorite silencing tool. There are a few changes from the previous iterations of it, though.

It simply silences your footsteps this time around with the Ghost perk applied. You’re able to make it last quite a while by refreshing it. Any kills by melee, with a throwing knife, or from shooting your gun extend its duration.

2 Tactical Insertion

Die, Place It Down, And Repeat

The Tactical Insertion in the armory of Call of Duty: Modern Warfare 3.

The Tactical Insertion, often shortened to Tac Insert, is available after you reach level 45. Then you can place one in your loadout and spawn where you desire. There’s no effect in single-life modes such as Search and Destroy, however.

In respawn modes, head to your favorite spot and put down your Tactical Insertion. This could be where you like to snipe from or a sneaky flank behind enemy lines. When you’re killed, you’ll spawn right on top of the Tac Insert.

1 Trophy System

The Best Field Upgrade Around

The Trophy System in the armory of Call of Duty: Modern Warfare 3.

The Trophy System reigns supreme in yet another Call of Duty. In MW3, you can get it after doing three Armory Unlock challenges. After that, just set it down to prevent throwables from impeding on your space.

It is a completely autonomous defensive system. You can destroy up to three pieces of equipment and projectiles. If enemies are trying to spam the objective with grenades, shoot them down with the Trophy System. If all three shots remain, you’re even be able to take down missiles from the sky.


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