![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)
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 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/8y6bw8ujcj471.jpg)
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
![M42a2 gas mask (this mask is the easiest to convert from a m40, all it needs is a m42 hose sling and a clip on microphone) : r/gasmasks M42a2 gas mask (this mask is the easiest to convert from a m40, all it needs is a m42 hose sling and a clip on microphone) : r/gasmasks](https://preview.redd.it/w0vswn2xx3z51.jpg?width=640&crop=smart&auto=webp&s=e2aa125e1464760aefdc6c6f157cb172f0be1b2c)