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Tank Killer is a Perception-based perk in Fallout 76, and a perk in the Nuclear Winter battle royale mode.


Tank Killer reduces the physical and energy[1] Damage Resistance of your target and adds a chance to stagger the target. However, it does not change the target's radiation, poison, frost or fire resistances.


Rank Description Form ID
1 Your rifles and pistols ignore 12% armor and have a 3% chance to stagger. 0031D4BC
2 Your rifles and pistols ignore 24% armor and have a 6% chance to stagger. 001D61E3
3 Your rifles and pistols ignore 36% armor and have a 9% chance to stagger. 001D61E8
Nuclear Winter battle-royale Your rifles ignore 40% armor. 00479B5D


  • For automatic rifles and pistols, the stagger chance is 1/3 of the stated value on the perk card; i.e. with Tank Killer 1, the perk card states a stagger rate of 3%, which is true for semi-automatic rifles and pistols. For automatic rifles and pistols, the stagger rate is 1%.
  • Due to armor penetration being multiplicative, stacking Tank Killer with Anti-Armor or certain weapon mods will result in diminishing returns.
  • As of patch, the Adventure mode variant of the perk applies to pistols as well as rifles.
  • Although the perk card art for Tank Killer depicts a R91 assault rifle, this weapon is not available in the game.


PCPC Playstation 4Playstation 4 Xbox OneXbox One As of patch, the Adventure mode variant of Tank Killer 3 will not provide the 9% stagger chance for semi-automatic pistols, as it is missing the WeaponTypePistol keyword required to apply the stagger to that weapon type. The keyword is present for the 3% stagger rate for automatic pistols and will work as expected for automatic pistols as such.[verified]