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For an overview of submachine gun models, see submachine gun.

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Sleepytyme is a unique weapon in the Fallout: New Vegas add-on Gun Runners' Arsenal.


Sleepytyme expanded

The 10mm SMG has a proud history in the wasteland, and this variant continues that tradition of excellence. Its integrated suppressor makes it accurate and deathly quiet. Other modifications boost damage and slightly raise the rate of fire, making this weapon a covert powerhouse. It has also been painted a sleek black color compared to its regular cousin.

Sleepytyme is also considered an improved holdout weapon. It is the only gun that can be used for the Nyah! See? challenge if the Courier does not want to turn any of New Vegas Strip's Three Families hostile. However, during the end of the quest Bye Bye Love, other weapons within the purview of the challenge may be used to kill the Omertas.


Sleepytyme can fire a total of about 2,495 standard rounds, the equivalent of 63 reloads, from full condition before breaking.

Ammunition typeDurability
Standard, HP & JHP249563



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 damageAttacks in V.A.T.S.Action Point costDamage per action pointWeapon spreadMagazine capacity (shots per reload)Durability (number of attacks before breaking)WeightValue in capsValue to weight ratioSkill requiredStrength required
10mm submachine gun 19
10mm submachine gun With all weapon mods attached 19
Sleepytyme Gun Runners' Arsenal22



  • Icon pc.png Icon ps3.png Icon xbox360.png When shooting, there may be a split-second delay where the firing animation will play, but no bullets will be fired. [verified]
  • Icon ps3.png Sometimes when reloading no reloading animation will be performed, but the gun will be reloaded. [verified]