M40 GAS MASKS M40A1 Mask - Small and Medium

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TWO Very Good/Excellent Condition M40 Gas Masks with accessories 1) Second Skin for the Medium mask 2) (1) Unopened Filter 3) Field Manual 4) Used NIOSH 40mm 3M filter (for display purposes) THESE MASKS ARE NOT A SURPLUS ITEM! Development & Operational History The M40 was the result of a program in the 1980s to develop a successor to the M17-series protective masks which had been in service with the US armed forces from the 1960s. The M40 was to be a return to conventional gas mask design with an external side-mounted filter canister, rather than the internal cheek filters of the M17, which were awkward to change, especially in a contaminated environment. The final prototype, the XM40, was approved for service and then designated the M40. The M40 was phased into service with the US Army in the mid-1990s, with another new design, the MCU-2/P similarly replacing older masks in service with the Air Force. However, both masks suffered from the inadequate protective capabilities of their facepiece, which was of a latex polymer susceptible to corrosion from Blister agents. Thus, the MCU-2/P is effectively ill-suited for protecting against much more than Riot control agents, and a 'Second Skin' had to be quickly issued for fitting over and reinforcing the M40 facepiece to make it effective in its intended role. I ship USPS and accept PayPal read more

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