At the end of the 1980s, bags of green gummed material, the same as in the MP-4B mask bags, began to be produced. In the mid-1980s, cotton belts were replaced with stylon belts. They differed in the material used (in the camouflage pattern wz 58 rainy, brownish, greenish or gummed) and details (additional waistband or straps regulating the bag's width). There were at least several patterns for the SzM-41M KF gas mask bags. The filter itself was a green, circular style filter designated E-014, similar to the Soviet EO-12. The mask had a 40mm GOST thread that was connected to the filter by a black hose. All of SzM-41M KF voice diaphragms had differed significantly from the Russian emitters because of its size and shape. User's mouth was meant to sit in that cup to transmit the voice straight to the voice diaphragm. First and third variant also had an additional feature inside the mask, a very small funnel-shaped rubber cup. The only noticable difference being the voice diaphragm. Except for the radiotelegraphists' version, they were nearly identical. The last version ran from late 70s till the end of the production. Third version has been produced in 1970s and early 1980s. This variant was designed for military radiotelegraphists. Second one, produced only in 1968, differs from the others by having much bigger voice diaphragm, identical to the one used in polish MP-4 masks. First one has been produced probably only in 19. This mask has beed produced in four variants. Like it's Russian counterpart, the SzM-41M KF was made of rubber with circular eyepieces.
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