The firing mechanism consists of a housing which contains a cocked firing pin. The lower portion is internally threaded to screw onto the barrel of the adapter cluster. The firing pin has two holes, one for a cotter pin and the lower one for the car seal wire which is replaced by the arming wire on assembly in the plane.
No information about hazardous components.
Nothing else to see.
TM 9-1904, Ammunition Inspection Guide (1944)