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, second only to scoped .44 Magnums and their unique versions. With a 0 spread rating it is also dead-on accurate, making shots fire exactly on the crosshair for a 100 energy weapons skill user. Like the alien disintegrator 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 Mothership Zeta (add-on)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.


Weapon name (current weapon is highlighted)Icon gunDamage per attack (damage per projectile)Icon damageDamage per secondIcon dpsAttacks per secondIcon attackCritical Chance % multiplierIcon chanceCritical damageIcon critical damageAction Point costIcon actionDamage per action pointIcon dapWeapon spreadIcon spreadMagazine capacity (shots per reload)Assault carbine extended magazinesDurability (number of attacks before breaking)Icon repairWeightIcon weightValue in capsIcon merchantValue to weight ratioIcon ratio
Alien atomizer fo3mzGametitle-FO3 MZ35
Atomic pulverizer fo3mzGametitle-FO3 MZ37
Captain's Sidearm fo3mzGametitle-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.


  • ps3Icon ps3 xbox360Icon xbox360 Sometimes, this weapon is not able to be equipped. Dropping all atomizers and picking them up again can fix this. [verified]
  • pcIcon pc xbox360Icon 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]