Not only are the Rheinmetall MK 1 MOD 0 66mm visual and infrared screening grenades ordered by the U.S. Marine Corps green, they are environmentally friendly.
The munition contains phosphorus pellets, which hold firmly on the ground, delivering thick smoke that lasts longer in windy conditions, compared to the brass flakes of the M76, which blow away.
Rheinmetall, which has been touting its green ammunition, also claims the MK 1 MOD 0 is less toxic than the M76. The Marines have banned the M76 for training purposes because of the health risks and environmental damage caused by its brass flakes.
MK 1 MOD 0 is the U.S. version of the German MASKE grenade. It will be delivered to the Marines by subsidiary American Rheinmetall Munitions under a contract worth $8.2 million, Rheinmetall announced today.
MK1 MOD 0 can be fired by the Marines' M1 tank, Amphibious Assault and Light Armored vehicles, but it is not qualified for use by the M7 Light Vehicle Obstruction Smoke Screen Systems mounted on some of the Corps Humvees.