Incendiary Grenade (4e Future Equipment)
From D&D Wiki
Level 4 Average Consumable Equipment
Cost: 175 credits
Weight: 2 lb
Benefit: A grenade containing an exothermic, pyrotechnic composition that burns hot enough to melt steel.
This terrible burning explosion can be used to destroy waves of "soft targets", to start fires, or to weld machinery to useless state.