NOS-EXA 40mm GOST to 40MM NATO Thread Adapter

Description

The Nos-Exa Group 40mm GOST allows you to enjoy the utility of widely available surplus GOST gas masks with the convenience of modern NATO filters. Using Soviet Union source documents and state of the art technology, we have directly matched the GOST standard thread to create air-tight, non-porous filter adapters at levels of quality far beyond the competition.
To read more, go to https://nos-exa.com/gtsadapter.html
Adapters come in blue or green. Message with preference. As of 3/31/21, there are 5 blues and 19 greens
Give new life and utility to your gear with Nos-Exa Group!