ɪt ɹᵻplˈeɪst ðɪ ˈɜːlɪɚɹ ˈɛm sˈɛvəntˌiːn ɡˈæs mˈæsk ænd ɪz ɪtsˈɛlf skˈɛdʒuːld təbi ɹᵻplˈeɪst baɪ ðɪ ˈɛm fˈɪfti dʒˈɔɪnt sˈɜːvɪs dʒˈɛnɚɹəl pˈɜːpəs mˈæsk.
It replaced the earlier M17 gas mask and is itself scheduled to be replaced by the M50 joint service general purpose mask.