Filler of either sulfur mustard or white phosphorus is placed in the empty space and a fuze is fixed to the top before firing.
It is marked as a standard chemical artillery munition, being gray with two green, horizontal bands.
[10] The United States Army still possesses a limited stockpile of these munitions, which are in the process of being safely decommissioned in accordance with the 1997 Chemical Weapons Convention.
Due to the properties of white phosphorus, the shell also has mild incendiary effects.
It is marked as a military smoke munition, being gray with a single yellow, horizontal band.