A grunt of 1st Battalion, 14th Infantry Regiment, 4th Infantry Division on tunnel rat duty wearing the experimental XM28 gas mask. [720x653] : r/MilitaryPorn
U.S. Army M28 XM28E4 Riot Control Agent Mask Lightweight Protective
US XM28 'Grasshopper' Tunnel Rats Gas Mask from Vietnam w/ Carrier Bag for Sale in Petaluma, CA - OfferUp
1969 Vietnam War XM28E4 Riot Control Agent Gas Mask - Medium – Omega Militaria
Sold at Auction: TUNNEL RAT XM28 US ARMY RIOT CONTROL GAS MASK
Gas Mask - MACV-SOG: A Unit of Modern Forces Living History Group