MIRA Safety CM-6M Tactical Gas Mask + CBRN Gas Mask Filter NBC-77 SOF 40mm KIT – KTactical | Premium Tactical Gear, Holsters, and Swag
Amazon.com: MIRA Safety - NBC-77 SOF - Single 40mm Gas Mask Filter - Special Combined CBRN Respirator Filters - NATO Standard Size (40mm x 1/7") - Canister Filter Fits CBRN Gas Masks -
NBC Respirator - DayZ Wiki
German Military NBC Gas Mask with FREE NBC Filter.