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The napalm payload is a weapon mod for the Hellstorm missile launcher, introduced in the Fallout 76 update Steel Dawn.


A launcher with the napalm payload equiped will have its basic damage output reduced, but will leave a fire hazard at the point of impact, burning enemies for 75 Fire (5 damage per second for 15 seconds) in a 16 unit radius. Additionally, the following changes are applied to the weapon:

  • 35% increased AP cost when using V.A.T.S.
  • 80% increased weapon weight.
  • 80% increased Caps value.
  • 16.67% increased rate of fire.
  • 25% decreased ADS.


Weapon modifications will modify an existing weapon, and any modifications previously equipped on the weapon will be destroyed, not unequipped. Loose mods cannot be crafted. For modifications unlocked through scrapping, the corresponding weapon must be scrapped in order to learn how to craft it.

Fuel (12)
Screw (6)
Steel (4)
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Napalm payload (1)


Craftable at any weapons workbench.