Refractors are special machines used to summon the Greylorm boss in Call of Duty: Modern Warfare 3 (MW3) Zombies. Read on to learn where to find all Refractors and how to spot them in the map!

Refractor Locations Map

All Refractor Locations

Game8 Notice	Refractor spawn locations will be random for every Zombies match. However, they will be limited to the 4 possible locations shown below.

Location 1

You can find this at the southeast part of the map, inside the Low Threat Zone. Look for the two Ammo Caches in the open area to find the Refractors.

Location 2

The Refractors can be found slightly at the northeast part of the map inside the Low Threat Zone. Search the open area with two Ammo Caches to find them.

Location 3

The Refractors are located in the northwest part of the map inside the Medium Threat Zone. Explore the hill south from the Fortress and look for two Ammo Caches to find the Refractors.

Of the three locations, this is the most difficult to play in given that the zombies will spawn at a minimum of level 2 and the nearby Legacy Fortress will have mercenaries that snipe your group if you get too close.

Location 4

These refractors are located in the football field just past the bridge that leads down into Zaravan City.

How to Find Refractors

Near Two Ammo Caches Close to Aether Storm

Refractor locations are different for each match, but their spawn location in each map is usually near two Ammo Caches that are beside each other.

There is only one area where the 4 Refractors spawn and you can identify them quickly by looking at the Tac Map for the 2 Ammo Caches that are beside each other. These Ammo Caches are normally found relatively near the Aether Storm.

What are Refractors?

Used to Summon Greylorm

Refractors are machines used to summon Greylorm, a hidden Zombie Boss. You need to collect four Calibration Data USBs and insert them into their respective Refractors to spawn Greylorm!

The refractor machine will say it requires an active Aether Storm to be used. This means you can only input the Calibration Data once the refractor is inside the Aether Storm. Wait for the match to end and the Aether Storm to spread in order to interact with the Refractors.

All Calibration Data USB Locations

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