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Omega Militaria - Vietnam War - XM28E4 Commonly referred to as 'grasshopper', the XM28 was introduced in 1968. Like the M17, it features two 'cheek' filters. Unlike the M17 however, this gas
![XM28E4 gas mask, most famously used during the latter stages of the Vietnam War, was meant specifically for riot control agents as a much lighter alternative to the M17. Most famously in XM28E4 gas mask, most famously used during the latter stages of the Vietnam War, was meant specifically for riot control agents as a much lighter alternative to the M17. Most famously in](https://i.redd.it/pbefm2ujcj471.jpg)