How to get Brain Rot Ammo Mod in MW3 Zombies

In Call of Duty MW3 Zombies, the Brain Rot Ammo Mod is a powerful modification you can use in your battle against the undead. I especially love using this mod as a solo player; here's how you can try it out for yourself in-game.

How to get the Brain Rot Ammo Mod in MW3 Zombies

You can find the Brain Rot Ammo Mod from contract rewards, and I recommend completing contracts like High-Value Target, Raid Weapon Stash, Escort, Defend Ground Station, Aether Extraction, and Spore Control. Likewise, you can obtain this mod by capturing Infested Strongholds, clearing Aether Nests, and from loot caches. Remember, getting the Brain Rot Ammo Mod in-game as an Acquisition means you can only use it one time. Successfully exfilling with it in your rucksack lets you use this item in the following match.

On the other hand, obtaining a Schematic for the Brain Rot Ammo Mod allows you to craft this item in the lobby before heading into a match. The cooldown for this Schematic is around three hours, so I highly recommend going after its Schematic. To do this, follow the same process of completing different contracts and capturing Strongholds. Ideally, you want to perform these activities in the yellow or red threat zone as the rewards are much better.

Related: How to use Raw Aetherium in MW3 Zombies

How to use Brain Rot Ammo Mod in MW3 Zombies

The Brain Rot Ammo Mod is an ammo modification that augments your weapon's bullets to deal toxic damage. This is one of the best ammo mods to use as it turns a hostile zombie into a friendly NPC for a few seconds. Essentially, a zombie with Brain Rot protects your operator by attacking other zombies and enemies. The friendly zombie deals toxic damage, and it dies after the mod effect wears out.

I've cleared out Infested Strongholds, and taken on some of the toughest Bounty bosses while using this modification as a solo player in Modern Warfare 3 Zombies. The Brain Rot effect is applied randomly, so I suggest targeting stronger zombies first to get a better chance of turning them. For instance, the Brain Rot Ammo Mod can turn powerful zombies like Manglers, Hellhounds, Mimics, or Crawlers into friendly allies that even the odds against strong enemies.

For more quality guides on Modern Warfare 3, check out How to play War Mode in MW3 here on Pro Game Guides.