US impact helmet consisting of a USM1 helmet shell with front snap fastener. The lot number is illegible. A fixed trigger guard is missing and the chinstraps are missing. The high pressure composite liner has illegible manufacturer's markings and the inner liner is missing. The liner cannot be removed from the hull. An incoming impact is visible on the right side with an outgoing impact on the left side causing the trigger guard to rip off. There is some wear and oxidation to the piece. condition II+. US impact helmet composed of a USM1 helmet shell with front seam closure. The lot number is illegible. One fixed loop is missing and the chinstraps are absent. The liner, made of highpressure composite material, has illegible manufacturer markings and its inner liner is missing. The liner cannot be removed from the shell. An entry impact is visible on the right side with an exit on the left side that caused the loop to be torn off. Note some wear and oxidation on the item. Condition II+.