The M1 helmet is a combat helmet that was used by the United States military from World War II until 1985, when it was succeeded by the PASGT helmet. For over forty years, the M1 was standard issue for the U.S. military. The M1 helmet has become an icon of the American military, with its design inspiring other militaries around the world. (Source: Wikipedia)
M1 helmet Patton version (for standard just delete stars on the front side). .max file is prepared for vray render you just have to place hdri map. Textures are created with Substance painter and exported for Vray.