![M42A2 and M25A1 combat vehicle gas masks. Both feature microphones with JJ-055 male connection jacks designed to interface with combat vehicle helmets. : r/gasmasks M42A2 and M25A1 combat vehicle gas masks. Both feature microphones with JJ-055 male connection jacks designed to interface with combat vehicle helmets. : r/gasmasks](https://preview.redd.it/9dwdlpbzsyv61.jpg?width=640&crop=smart&auto=webp&s=fd19b4a93a773ed29c63055af4a7e6688375092e)
M42A2 and M25A1 combat vehicle gas masks. Both feature microphones with JJ-055 male connection jacks designed to interface with combat vehicle helmets. : r/gasmasks
![Original U.S. Vietnam War M25A1 Chemical-Biological Gas Mask with Filt – International Military Antiques Original U.S. Vietnam War M25A1 Chemical-Biological Gas Mask with Filt – International Military Antiques](https://www.ima-usa.com/cdn/shop/products/ON7019__03.jpg?v=1604043268)
Original U.S. Vietnam War M25A1 Chemical-Biological Gas Mask with Filt – International Military Antiques
![Here's my newest part of the collection: The M25 vehicle crewman gas mask. Entered into service in 1963, and mine dated 1965 in very good condition. : r/gasmasks Here's my newest part of the collection: The M25 vehicle crewman gas mask. Entered into service in 1963, and mine dated 1965 in very good condition. : r/gasmasks](https://preview.redd.it/wub6mwn42rl91.jpg?width=640&crop=smart&auto=webp&s=9596163ef3fb668c47d90d1b5d8189d69f47a907)