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The alien atomizer is an energy weapon of alien origin which is added to Fallout 3 with the release of the Mothership Zeta add-on. It is a standard sidearm that is carried by many aliens found throughout the ship.


The atomizer is an alien pistol commonly used by the aliens onboard Mothership Zeta.

It has an average rate of fire and does relatively high damage when compared to other sidearms found throughout the Capital Wasteland. With 0 spread, it is also dead-on accurate, making shots fire exactly on the crosshair for a 100 energy weapons skill user. It has a very high item HP, and its ray will ignite gas leaks it travels through.

This weapon has an exceptionally high value-to-weight ratio (250 caps per pound at full repair), so scavenging the dozens of atomizers found in the course of Mothership Zeta's main quests can be a very lucrative endeavor.


An alien atomizer can fire a total of about 714 times, the equivalent of 36 reloads, from full condition before breaking.


  • Atomic pulverizer - Although only slightly more powerful than the atomizer, the pulverizer uses only 12 AP to fire a shot.
  • Two additional, identical versions of this weapon are present in the add-on's code. Examined in the G.E.C.K. they differ only by their IDs, DLC05WeapPistolB and DLC05WeapPistolC. They are otherwise identical to normal alien atomizers and are even affected by the Xenotech Expert perk, but cannot be used to repair alien atomizers or their variants. Though not placed anywhere in the add-on, these weapons have been known to show up on occasion.


Weapon name (current weapon is highlighted)- Weapon name (melee or unarmed)Attacks in V.A.T.S.- Attacks in V.A.T.S.
Weapon name (current weapon is highlighted)- Weapon name (gun, energy or explosive)Action point cost- Action point cost
Damage per attack (damage per projectile)- Damage per attack (damage per projectile)Damage per action point- Damage per action point
Damage per second- Damage per secondWeapon spread- Weapon spread
Area of effect damage- Area of effect damageMagazine capacity (shots per reload)- Magazine capacity (shots per reload)
Effect damage & duration- Effect damage & durationDurability (number of attacks before breaking)- Durability (number of attacks before breaking)
Bonus effects- Bonus effectsWeight- Weight
Attacks per second- Attacks per secondValue in caps- Value in caps
Critical chance % multiplier- Critical chance % multiplierValue to weight ratio- Value to weight ratio
Critical damage- Critical damageSkill required- Skill required
Critical effect damage & duration- Critical effect damage & durationStrength required- Strength required
With all mods attached- With all mods attached
Weapon name (current weapon is highlighted)Damage per attack (damage per projectile)Damage per secondAttacks per secondCritical Chance % multiplierCritical damageAction Point costDamage per action pointWeapon spreadMagazine capacity (shots per reload)Durability (number of attacks before breaking)WeightValue in capsValue to weight ratio
Alien atomizer 35
Atomic pulverizer 37
Captain's Sidearm 35



The weapon also appears in Fallout: New Vegas as legacy content in the game files. However it can only be acquired through console commands player.additem f26d3 1. It has no name or Pip-Boy image, and when equipped it acts like a gauntlet rather than a gun.


  • Playstation 3Playstation 3 Xbox 360Xbox 360 Sometimes, this weapon is not able to be equipped. Dropping all atomizers and picking them up again can fix this. [verified]
  • PCPC Xbox 360Xbox 360 Sometimes, the weapon cannot be unequipped. It cannot be removed from the player's inventory and after loading a game it will always be in his/her hand, even if another weapon had previously been equipped. [verified]
  • PCPC Sometimes, the weapon will be held in front of the player, as if looking down its "iron sights". [verified]