The M4A1 is an Israeli civilian NBC (Nuclear, Biological, Chemical) gas mask originally distributed and approved by the Israeli Civil Defense Authorities. It features a thick rubber face piece with two scratch-resistant polycarbonate lenses, a voice emitter system, a 40mm filter attachment port, and a drinking attachment port. The mask comes with a standard 40mm NATO filter, which should provide respiratory protection against gases, vapors, and particles long enough to evacuate a contaminated area. The adjustable five-point head harness ensures a secure, airtight seal around your face.
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