Front view of the C4 CBRN Gas Mask in cloud of smoke

AirBossC4 CBRNGas Mask

Key Features

The AirBoss C4 Gas Mask is a trusted air-purifying respirator choice for protection by military, police, and first responders worldwide. The butyl rubber is tested in the harshest conditions and is proven to protect users against chemical warfare agents (CWA), toxic industrial chemicals (TIC), and biological agents. With an optimal balance of performance and comfort, it has been a mask of choice for over a decade, and it’s still going strong.

Profile image of the head harness for the C4 CBRN Gas Mask

Comfortable and secure fit

A breathable mesh head harness for easy long-duration wear with head gear, and two points of adjustment for fast donning and doffing.

Multiple ADG filter cartridges

Interchangeable filters

EN 148-1 40mm NATO filter threads for use with any AirBoss filter. Can be used on either left or right side for clear view with weapon sights.

Close-up of glass lens

Operation-driven optics

Shatterproof and replaceable polycarbonate lenses for superior operational performance and protection.

Armored shield with 24-hour clock visual


24-hour defense against chemical warfare agents (CWA), toxic industrial chemicals (TIC), and biological agents.

Close-up of Voice Projection Unit (VPU)

Audible speech transmission

Front and side speech transmitters, and usable with an optional AirBoss Voice Projection Unit (VPU) for clear, audible speech.

Hydration system with CBRN Canteen and CamelBak

Safe hydration

Useable with CBRN canteens and CamelBaks for safe hydration when it's needed most.


Weight (without filter)
  • 1 lb (454 g) per unit (size M)
Polycarbonate ballistic lenses
Extra Small (XS), Small (S), Medium (M), and Large (L)
Operational Range
-26° F to 158° F (-32° C to 70° C)
-67° F to 140° F (-55° C to 60° C)
Shelf Life
15 years in original packaging
Vacuum foil bag

Works with these products

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Cover of the C4 CBRN Gas Mask brochure

C4 CBRN Gas Mask

The AirBoss C4 CBRN Gas Mask is a trusted and essential kit component of military and first-response forces worldwide.

Cover of the Filters and Cartridges brochure

Filters and Cartridges

AirBoss filters protect against a wide range of chem-bio agents and contaminants. Our filters can be used individually or in a dual configuration.

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