Marine Machine Gunner MOS 0331 Combat Vet T-Shirt. Digitally Printed on soft superior 100% ring-spun Cotton, Triblend, 50/50 premium Soft Style Quality T-shirts. Not Slim Fit Size XXL is Heavy Cotton. The back design consist of a loaded m249 Marine Machine Gun with MOS 0331. The front design consist of the U.S. Flag with Machine Gunner USMC and mess with the best, die like the rest quote.