Vietnam war USMC M1 Helmet test
This video tests the ballistic resistance of a Vietnam-era USMC M1 helmet against various handgun and rifle calibers. While it stops lower-powered rounds like .22 LR and .32 ACP, it shows significant damage from 9mm and is easily penetrated by high-velocity rounds like 5.7x28mm, .50 AE, and 7.62x39mm. The tests highlight the helmet's limitations against modern and rifle-caliber threats.









