M45 Land Warrior Gas Mask

The M45 Chemical-Biological Mask System was fielded and adopted in 1996 in order to replace the M43 Type II and M24 Chemical-Biological Aircraft Masks, as well as to provide a modular mask platform for USSOCOM Ground Forces. Stemming from one-mask joint branch development experimentation in the early 1990’s, the M45 initially sought to replace all masks in service with the U.S. Armed Forces, but due to logistical and ultimately legal issues, only entered service in the aforementioned roles. The mask itself features a sleek, streamlined facepiece made of silicone rubber with butyl secondary skin and hood, a drinking system with the M1 Quick-Disconnect Drinking Adapter for hydrating in contaminated environments, integral ports to accommodate the M-133/U Dynamic or Land Warrior Microphone/Positioner, Front and Side Kapton Film Voice Emitters, and close-fitting elliptical eyelenses that are shaped to improve peripheral vision while allowing seamless compatibility with night vision and other optical equipment.

It is notable that all plastic parts of the mask are ultrasonic welded, a process which has never been applied to a protective mask in the past.


(source: Gas Mask and Respirator Wiki)


Manual: TM 3-4240-348-10


Stock Number Reference:

Mask, Chemical-Biological: Land Warrior, M45

Size-NSN Sheet
Size NSN Assign Date
X-Small 4240-01-447-6989 1997-08-13
Small 4240-01-447-6987 1997-08-13
Medium 4240-01-447-8967 1997-08-15
Large 4240-01-447-6988 1997-08-13

The M45 Chemical-Biological Aircrew Protective Mask.
Air Warrior Block II with M45 ACPM.
Members of 1st SFOD-D (Delta Force) wearing M45 CB Masks with Wilcox P/N 23100G01 Exhaust Valve Kits and M7A1 Mask Amplifiers, Fort Bragg, 2005-2007.
Members of Navy EODMU-11 wearing M40A1 and M45 Masks with C420 PAPR Blowers.