I bought this mask from a Surplus shop in St.Augustine. The man told me it was a Polish MP5 but i thought it looked more like the French Arfa which the MP5
Maska Przeciwgazowa Mp5 - Woj-Pol
Used Authentic Polish MP5 Maskpol Military Gas Mask - Survival General
Maska Przeciwgazowa Mp5 - Woj-Pol
MP-5 gas mask – RGEMaster
NATO MP-5 GAS MASK WITH FILTER AND BAG
MASKPOL Gas Mask Filter 40mm Nato Filter for Israeli MP5 Respirator Canister NEW | eBay
Used Authentic Polish MP5 Maskpol Military Gas Mask - Survival General