Use this Google web search form to get an up to date report of what's out there.įor good results, try entering this: gasmask m3 OR m4. Topic, too many to list here and too many to keep up with as they come and go. There are many fine websites that have additional information on this Like other WW II webbing and bags, the bag color was OD #3 early in the war but changed to the darker OD #7 shade in 1943. The M6 bag has a top closure that is secured with three LTD fasteners. The bag has interior pockets for accessories and is stenciled with "Army Lightweight Service Mask" on the exterior front, near the bottom.
#ARMY GAS MASK PLUS#
The M6 bag was used for both the M3 and M4 masks (and others) to hold the mask itself, the canister, plus accessory items such as anti-dimming sets (to prevent fogging of the eye lenses), covers and protective ointment.
#ARMY GAS MASK SERIES#
The M3 and M4 series of Lightweight Service Gas Masks required a new carrier bag due to the shorter hose length. The C15 outlet valve assembly has a flat, smooth external cover. (4) The M8 outlet valve assembly has an external guard with a concentric circle grill, as used with the M2A2 and M2A3 masks.
(3) The rifle skid is a ridge molded into the mask material, intended to prevent entanglement between the mask wearer's rifle and the harness straps. The two straps on each side are held against the mask by a bridge loop. The lowest strap is attached horizontally at the cheek, with the clip pad attachment point forward from the edge of the mask. (2) Harness attaches to the M4 and M4A1 masks with a riveted clip on pads. Lowest strap, at the cheek, is attached to a tab at a 45° angle, at the edge of the mask. (1) Harness attaches to the M3 and M3A1 masks with a riveted clip, flat against the mask and near the edge. This table lists the components and construction details across the M3 and M4 series variants: It can be difficult to distinguish the M3 from the M4 series masks due to the identical facepiece. Identifying the M3 and M4 Series Lightweight Service Gas Masksīoth the M3 and M4 series Lightweight Service Gas Masks use the M2A2 facepiece, but have a shorter hose and a different canister than the M2A2. A modification to the outlet valve resulted in the M4A1 Lightweight Mask in 1945. The M4 series masks were made of natural rubber in olive drab color. It had many features in common with the M3 series, including the M2A2 facepiece, internal nosecup, outlet valve, shorter hose and lighter M10A1 canister. In 1942, the M4 Lightweight Mask was standardized to add additional improvements. The M3 series remained in use until obsoleted in 1949. Over 13 million of the M3 series masks were produced during World War II. In 1944, the M3A1 mask was released featuring an improved outlet valve. The Neoprene was found to become unusable in cold weather due to hardening of the mask under those conditions while the natural rubber remained flexible even in cold weather. The M3 was manufactured from both grey rubber and black Neoprene (synthetic rubber). The corrugated hose between the facepiece and the canister was shortened to save materials. The changes and improvements retained the same level of protection to the wearer as the M2 series mask.
It used the molded rubber facepiece from the M2A2 mask with the addition of an interior anti-fogging nosecup, and an improved, lighter M10A1 filter canister.
In 1942, the M3 Lightweight Service Gas Mask was standardized, weighing only 3.5 pounds vs. The unsatisfactory weight and bulk of the M2 series masks led to the development of an improved service gas mask. Their masks appear to be the black Neoprene version of the M3 Lightweight Service Gas Mask. Enlisted men of the 442nd Infantry Regiment, a unit whose soldiers were all of Japanese parentage, emerge from gas training room at Camp Patrick Henry, VA, 29 April 1944.
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