Gametitle-FO3 MZ
Gametitle-FO3 MZ

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.

Note also that 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 Gametitle-FO3 MZ - Although only slightly more powerful than the atomizer, the pulverizer uses only 12 AP to fire a shot.
Icon cut contentThe following is based on Fallout 3 cut content and has not been confirmed by canon sources.
  • 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.
Icon cut contentEnd of information based on Fallout 3 cut content.


Icon melee- Weapon name (melee or unarmed)Icon sequence- Attacks in V.A.T.S.
Icon gun- Weapon name (gun, energy or explosive)Icon action- Action point cost
Icon damage- Damage per attack (damage per projectile)Icon dap- Damage per action point
Icon dps- Damage per secondIcon spread- Weapon spread
Icon explosion- Area of effect damageAssault carbine extended magazines- Magazine capacity (shots per reload)
Icon effect- Effect damage & durationIcon repair- Durability (number of attacks before breaking)
Icon bonus effect- Bonus effectsIcon weight- Weight
Icon attack- Attacks per secondIcon merchant- Value in caps
Icon chance- Critical chance % multiplierIcon ratio- Value to weight ratio
Icon critical damage- Critical damageIcon ability- Skill required
Icon crit effect- Critical effect damage & durationIcon fist- Strength required
Icon plus- With all mods attached
Icon gunIcon damageIcon dpsIcon attackIcon chanceIcon critical damageIcon actionIcon dapIcon spreadAssault carbine extended magazinesIcon repairIcon weightIcon merchantIcon ratio
Alien atomizer Gametitle-FO3 MZ35
Atomic pulverizer Gametitle-FO3 MZ37
Captain's Sidearm Gametitle-FO3 MZ35



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 3Icon ps3 Xbox 360Icon xbox360 Sometimes, this weapon is not able to be equipped. Dropping all atomizers and picking them up again can fix this. [verified]
  • PCIcon pc Xbox 360Icon xbox360 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]
  • PCIcon pc Sometimes, the weapon will be held in front of the player, as if looking down its "iron sights". [verified]


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