The SR10 is the current respirator of the Turkish armed forces. The mask is based on the British S6 respirator.
The Mask Edit
The mask itself is an updated version of the British S6 (SR6).
It's very similar to the S6 but the valve system of it is a bit different.
The mask was adopted in early 80's by Turkish military and CBRN teams. It's produced by MKEK (Machine and Chemical Industry Corp.)
The SR10ST is the version of SR10 that has a drinking device.