Molecular Manipulator

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Molecular Manipulator
  • Molecular Manipulator.png
Stack digit 1.png
Damage580 Ranged
Knockback8 (Very Strong)
Critical chance4%
Use time20 Average
Velocity50 effective
TooltipFires a fast null bullet that distorts NPC stats
'Is it nullable or not? Let's find out!'
RarityRarity Level: 12
Sell 30 Gold Coin.png
Research1 required

The Molecular Manipulator is a craftable post-Moon Lord ranged weapon that is a direct upgrade to the Nullification Pistol. Each shot will alter its target in some way, as long as it is not a boss. The following effects can happen at an equal chance:

  • Grow 400% bigger (If a boss is not alive)
  • Shrink 90% smaller (If a boss is not alive)
  • Deal 20 more contact damage
  • Deal 20 less contact damage
  • Become completely resistant to knockback
  • Remove all knockback resistance
  • Increase defense by 10
  • Decrease defense by 10
  • Increase velocity upwards
  • Increase velocity to the left or right

Its best modifier is Unreal.




  • The amount of contact damage increase or decrease will scale with difficulty.
  • The amount of velocity increased is 1.875 blocks per second. This effect is additive and can therefore counteract opposite motion.
    • For example, under the effect of increasing vertical velocity, an NPC that moves downwards at a rate of 3 blocks per second will still move downwards, but at a rate of 1.125 blocks per second.



These history sections are still a work-in-progress, and may not yet contain changes relevant to the current version of the Calamity Mod.
  • Can no longer affect NPC size while a boss is alive.
    • Now considered a specialist weapon.
    • Increased sell price from 24 Gold Coin to 30 Gold Coin.
  • Can no longer affect the contact damage of Super Dummies.
  • Now uses 1 Core of Calamity in its recipe instead of 3.
    • Nerfed damage from 890 to 580.
    • No longer consumes the player's health as ammo.
    • Decreased Nullshot projectile damage modifiers from +500/-500 damage to +20/-20 damage.
    • Decreased Nullshot projectile defense modifiers from +20/-20 defense to +10/-10 defense.
    • Nullshot launch modifier now adjusts the enemy's y-axis location between +15 and +30 pixels instead of always setting an enemy's y-axis to +30 pixels.
  • Using it when at or below 0 health now kills the player.