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For an overview of submachine gun models in the Fallout series of games, see submachine gun.
Gametitle-FNV GRA
Gametitle-FNV GRA

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


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, making it the only automatic holdout weapon. Sleepytyme 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.


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)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
10mm submachine gun 19
10mm submachine gun With all weapon mods attachedIcon plus 19
Sleepytyme Gametitle-FNV GRA22



  • PCIcon pc Playstation 3Icon ps3 Xbox 360Icon xbox360 When shooting, there may be a split-second delay where the firing animation will play, but no bullets will be fired. [verified]
  • Playstation 3Icon ps3 Sometimes when reloading no reloading animation will be performed, but the gun will be reloaded. [verified]