Croatian made grenade from 1991. It was produced by the thermal power plant in Sisak, Croatia.
During constant serbian shelling of Sisak in 1991, the thermal power plant in that city was jeopardized by a possible serbian attack andso its engineers started to produce this grenade as the power plant had some machines and large amount of steel pipes in its workhouse.
The grenade was produced fulltime in 3 shifts and immediately sent to croatian soldiers of local batallions who were defending the city of Sisak.
At the end of 1991 the production stopped.

Information and photos © Goran.