Omega Militaria - Vietnam War - XM28E4 Commonly referred to as 'grasshopper', the XM28 was introduced in 1968. Like the M17, it features two 'cheek' filters. Unlike the M17 however, this gas
![US XM28 'Grasshopper' Tunnel Rats Gas Mask from Vietnam w/ Carrier Bag for Sale in Petaluma, CA - OfferUp US XM28 'Grasshopper' Tunnel Rats Gas Mask from Vietnam w/ Carrier Bag for Sale in Petaluma, CA - OfferUp](https://images.offerup.com/bX3_i-bWElMZKgW46H7q6xGDjcA=/477x800/e024/e0247518e3144781a8acf53879ee620c.jpg)
US XM28 'Grasshopper' Tunnel Rats Gas Mask from Vietnam w/ Carrier Bag for Sale in Petaluma, CA - OfferUp
![A grunt of 1st Battalion, 14th Infantry Regiment, 4th Infantry Division on tunnel rat duty wearing the experimental XM28 gas mask. [720x653] : r/MilitaryPorn A grunt of 1st Battalion, 14th Infantry Regiment, 4th Infantry Division on tunnel rat duty wearing the experimental XM28 gas mask. [720x653] : r/MilitaryPorn](https://preview.redd.it/a-grunt-of-1st-battalion-14th-infantry-regiment-4th-v0-nkxl1m998sib1.jpg?width=640&crop=smart&auto=webp&s=1a39f6aa405f229e9c48ab24fee3416c5eb45b3d)