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Gametitle-FNV OWB
Gametitle-FNV OWB

FIDO is the upgraded K9000 cyberdog gun in the Fallout: New Vegas add-on Old World Blues.


Unlike the K9000 cyberdog gun, FIDO uses .44 magnum rounds instead of .357 magnum rounds, resulting in higher damage and a slightly higher spread. The brain case and the scope are red instead of green and the decal is changed from a golden retriever to a bulldog. Other features of the K9000 cyberdog gun are included in FIDO.


FIDO can fire a total of about 2495 standard rounds, the equivalent of 50 reloads, from full condition before breaking.

Ammunition typeDurability
Standard, HP & SWC249550
.44 special332967



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 damageAttacks in V.A.T.S.Icon sequenceAction 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 ratioSkill requiredIcon abilityStrength requiredIcon fist
K9000 cyberdog gun fnvowbGametitle-FNV OWB26
K9000 cyberdog gun With all weapon mods attachedIcon plus fnvowbGametitle-FNV OWB28
FIDO fnvowbGametitle-FNV OWB36



  • The kennel keys are in X-13 research facility.
  • The upgrade is best applied to a K9000 cyberdog gun without mods, as applying the update will eliminate all mods the gun currently has.
  • K9000's mods cannot be equipped to FIDO.
  • Players who only have access to one K9000 will not be able to apply mods to this weapon, making K9000 weapon mods useless.

Behind the scenes

The name FIDO refers to the archetypical dog name "Fido", most famously associated with the name of Abraham Lincoln's dog.

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