The M50 series is certified to MIL-SPEC PRF-EA-10003. The mask design features improved performance against chemical and biological agents, toxic industrial chemicals, and nuclear fallout. The dual, low profile filters reduce weight and bulk while reducing breathing resistance by fifty percent over the M40 series mask. The filters incorporate a shelf-life indicator patch which changes colors from white to blue when the filters are no longer serviceable. The mask face blank incorporates self sealing filter mounts that allow for filter changes in a contaminated environment.
