General Information: The M-1C, officially designated “Helmet, Steel, M-1C Parachutists,” was an improved version of the earlier M-2 paratrooper helmet. It addressed the main deficiency of the M-2, which was the tendency for the “D” shaped chinstrap loops to break. The M-1C had had the same flexible chinstrap attachment device as used on the midContinue reading “US M-1C*”