steel bulletproof helmet USA-NIJ IIIA Protective Level, Available in Black, Green,navy camouflag,and UN BLUE steel bulletproof helmet USA-NIJ IIIA Protective Level, Available in Black, Green,navy camouflag,and UN BLUE. US troop bulletproof helmetMaterial:special steelThickness:1.8mmProtection level:USA-NIJ standard 0101.04 III ATesting gun:9mm Uzi sub-machine gun or 9mm parabellum pistol ...