Chinese MF-1A Gas Mask

Chinese MF-1A Gas Mask, basically another redesign of the Soviet ShM style masks such as the ShM-41 or 62, that most people will know as the GP-5.
The MF-1A is very similar to the TF-1 but with triangular lenses which provide the wearer with a better field of view. Unfortunately quality control is a bit iffy on these masks and with mine, the intake valve assembly has been glued in poorly.