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15/7/2010, · The C2 canister on the M40 mask can protect the user from up to 15 nerve, choking, and blister agent attacks, and two blood agent attacks. However, the original C2 canister contains a radioactive source (Chromium 63) that has prompted the U.S. Army to replace it with a newer, non-radioactive alternative.
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 …
C2 ,Canister, (NSN: 4240-01-119-2315) M295 Decontamination Packet; 2 Skin Decontamination Packets; Helmet Chemical Protective Cover; ,GAS MASKS, ARE NOT RETURNABLE ITEMS. THESE ARE GENUINE G.I ISSUE AND MILITARY SURPLUS BUT WE MAKE NO CLAIMS AS TO THE EFFECTIVENESS OF ANY OF THE ,GAS MASKS,. SOLD AS NOVELTY ITEMS ONLY.
The M42A2 CB ,mask, has the same components as the ,M40,. The primary users include USA and USMC units. The ,mask, has a drinking tube that connects to a canteen with an M1 canteen cap. The primary users include USA and USMC units.  Thus, the ,masks, were effectively ill-suited for protecting against much more than riot control agents, and a butyl rubber 'second skin' had to be ...
14/4/2011, · "The C2A1 is a military ,canister, and is not part of a NIOSH approved respirator system. The FR-C2A1 is part of a NIOSH approved respirator system, The FR-64 is part of a NIOSH approved system when used with the 3MFR-,M40, face piece. Which is "better" will depend on what specific chemicals you are concerned about.
GM04 ,M40, SERIES G.I. ISSUE ,GAS MASK,. SIZE: Small CONDITION: Used, Good CONTAINS: Issue Carry Case in Good Condition C2A1 ,Canister, (NSN: 4240-01-361-1319) Chemical Hood Waterproof Chemcial ,Mask, Bag Operation Manual Chemical Agent Book 10 Card PMCS Check List ,GAS MASKS, …
The C2 filter canister was developed in Canada, and saw widespread use in the US military. It is threaded in compliance with STANAG 4155 (Rd40 x 1/7" thread), making it compatible with most NATO masks. The filter provides CBRN protection, but offers minimal protection against ammonia. Current issue C2a1 filter.
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 since 1959. The M40 was to be a return to conventional protective 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.