Icon disambig
For an overview of grenade launcher models in all games, see grenade launcher.

The grenade machinegun is a weapon in Fallout: New Vegas.


The grenade machinegun is a powerful rapid-fire weapon which uses 25mm ammunition. The attached computer monitor appears to show the weapon's feed system and other details, although this is purely cosmetic and does not reflect actual use. While its contents are cosmetic, the monitor does appear to control the feed system as when the weapon jams the display distorts, and the Courier unjams it by hitting the monitor.

Outside of V.A.T.S., the weapon can be used for indirect fire over a considerable distance.


The grenade machinegun can fire a total of about 1995 standard rounds, the equivalent of 67 reloads, from full condition before breaking.

The grenade machinegun is considered a unique class of weapon and therefore cannot benefit from the Jury Rigging perk.




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 explosionIcon attackIcon chanceIcon critical damageIcon actionIcon dapIcon spreadAssault carbine extended magazinesIcon repairIcon weightIcon merchantIcon ratioIcon abilityIcon fist
Grenade machinegun 0
Grenade machinegun Icon plus 0
Mercy 5



If the firing button is held as the weapon runs out of ammunition, the grenade machinegun will keep playing its firing animation, even though it is out of ammunition (no firing sound is played while this happens). The screen will also still keep scrolling as if firing.

Behind the scenesEdit

The text on the screen of the gun is written in BASH script. The code would be used to check the number of parameters provided by the user, providing an error if the number was incorrect. However, it is incomplete, lacking a matching fi (end if) to the if statement. When firing, the text scrolls the same chunk of code.


  • PCIcon pc Playstation 3Icon ps3 Xbox 360Icon xbox360 Lonesome Road overrides some of the changes that have been made to the grenade machinegun in previous patches. With Lonesome Road installed and nothing else taking up space in your load order, the grenade's base damage is decreased to 0 and its item HP is reduced to 200. [verified]
  • PCIcon pc Playstation 3Icon ps3 Xbox 360Icon xbox360 Occasionally firing a multitude of rounds in quick succession will cause the sound to delay, hearing both the 'firing' and 'impact' sounds repeatedly trying to catch up, long after letting up on the trigger. If fired additional times when caught up in the delay, the hardware begins to lag as well, causing freezing and stuttering. This can often be fixed by firing one more time. [verified]
  • PCIcon pc Playstation 3Icon ps3 Xbox 360Icon xbox360 The ammunition pack may become stuck to the back of the player character. To fix this, drop the grenade machinegun, equip another weapon. Drop the second weapon before picking up both weapons. [verified]
    • Alternatively, if you hot-key the weapon and equip another weapon on another hot-key, it may work.
  • PCIcon pc Xbox 360Icon xbox360 The grenade machine gun doesn't inflict any damage on lakelurk kings at Blue Paradise Vacation Rentals. Lakelurk kings will die inside Camp Guardian caves. The coyote pup inside the truck trailer with at Canyon Wreckage will not die or take any damage, however the coyote den mother will. The coyote pack alpha on top of hill by the Canyon Wreckage can be killed with the grenade machinegun, but the other coyotes and pups will not take any damage with this weapon. The bark scorpion at the Ivanpah Dry Lake does not take any damage either. The Golden Gecko Hunter at the Crescent Canyon does not take any damage from the weapon but regular Golden Geckos do. Radscorpions just south of Black Rock Cave will not die or take any damage either from the grenade machinegun. [verified]


Grenade machinegun icon


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