CBRN module

The CBRN module (right) with a HUL (left).

The CBRN module, short for the Chemical, Biological, Radiological and Nuclear module, is an external attachment for several MJOLNIR Mark V and GEN3 helmets.

Usage

The CBRN module is employed for operations in hazard zones, wherein chemical, biological, radiological and nuclear threats are present.

Compatibility

The CBRN module has been observed to be compatible with the following helmets:

• AKIS (AKIS-style variant)
• Commando (Standard variant)
• CQC (Standard variant)
• EOD (EOD-style variant)
• GUNGNIR (EOD-style variant)
• HAZOP (Standard variant)
• Military Police (Standard variant)
• ODST (Standard variant)
• Scout (Standard variant)
• Security (EOD-style variant)

Variants

The CBRN module has three observed variants, each with its own distinct physical appearance.

Standard variant

The standard variant is single-piece rebreather covering the "mouth" area of the given helmet.

• 

  The CBRN module on the CQC helmet.

• 

  The CBRN module, along with a HUL, on the ODST helmet.

• 

  The CBRN module, along with a HUL, on the HAZOP helmet.

• 

  The CBRN module, along with a CNM, on the Scout helmet.

• 

  The CBRN module, along with a CNM, on the Commando helmet.

• 

  The CBRN module, along with a HU/RS module, on the CQB helmet.

EOD-style variant

The EOD-style variant of the CBRN module is a pair of filter attachments on either side of the helmet. It is employed on the standard Mark V EOD-class Mjolnir helmet, but it could be removed for other helmet attachments.

• 

  The CBRN module on the standard EOD helmet.

• 

  The CBRN module, along with a HU/RS module, on the GUNGNIR helmet.

• 

  The CBRN module, along with a CNM, on the Security helmet.

AKIS-style variant

AKIS-style variant was developed in parallel to the AKIS helmet, and has only been observed as compatible to the AKIS helmet.

• 

  The CBRN module on the AKIS helmet.

Gameplay

The CBRN module and its variants serve as cosmetics and have no impact on gameplay.

Halo: Reach

The first two variants of the CBRN module are available as attachments on several helmets in the armor permutations of Halo: Reach. The device is priced at different levels of Credits, depending on the base helmets. In Halo: The Master Chief Collection, the same CBRN-attached helmets are unlockable in Season 1: Noble, while the AKIS-style variant added in Season 5: Anvil.

Halo 5: Guardians

The CBRN module is featured on the EOD GEN1 helmet, which is one of the helmets that could be acquired through the Classic Helmet REQ Pack in Halo 5: Guardians .

Halo Infinite

A variant of the CBRN module will be available on the Commando helmet in Halo Infinite.

Production notes

"CBRN" stands for chemical, biological, radiological, and nuclear, and is pronounced "C-BURN". It is the same abbreviation used in real life, hence its association with the HAZOP armor permutation.

Gallery

• 

  A GEN3-clad Spartan-IV with a CBRN module attachment in Halo Infinite.

List of appearances

• Halo Reach (First appearance)
• Halo 5: Guardians
• Halo Infinite