The is a full-face respirator originally developed for the U.S. Navy and Air Force to provide CBRN (Chemical, Biological, Radiological, and Nuclear) protection. While largely replaced in active military service by the M50 mask, it remains a popular choice for collectors and emergency preparedness due to its wide field of vision and compatibility with standard NATO filters. Key Features

: Specifically engineered with an internal nose cup and check valves that deflect exhaled air away from the lens to reduce fogging during use.

: Includes an integrated drinking tube compatible with standard military canteens and Camelbak systems, alongside a mechanical speaking diaphragm for clearer voice transmission.

: Designed with a dual-canister mount, allowing the 40mm NATO filter to be placed on either the left or right side to accommodate both left- and right-handed shooters.

Authentic surplus often includes a clear polycarbonate lens outsert for added impact protection. Available at Catalyst Surplus for $110. USGI MCU-2/P Gas Mask with Second Skin - M Keepshooting Go to product viewer dialog for this item.

Often sold with a "Second Skin" butyl rubber cover for enhanced chemical resistance and durability. Available at Keepshooting for $199.95. USGI MCU-2/P Gas Mask w/Bag Medium Kruschiki Supply Company Go to product viewer dialog for this item.