Grenade Launcher

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Data is up-to-date
Last updated for version
Last mentioned in changelog
The current game version is
Grenade Launcher

Inventory icon

A portable grenade launcher for 40mm grenades.
Quality Bonuses +10% Explosion Radius
+10% Explosion Damage
Attack Speed 1.25
Ammunition 40mm Grenade
40mm Stun Grenade
40mm Acid Grenade
40mm Mini Nuke
Ammo Capacity 6
Ammo Max Stack 8
Skill Requirements
Skill Requirements
Weapons: 60
Handicap Spread +9 (1 → 10)
Constructible? No
Deconstructor Yield
Minimum Difficulty 30%
Base Price 1000 mk
OutpostOutpost Buy Sell
Habitation OutpostHabitation N/A 450 mk
ColonyColony N/A 375 mk
Research OutpostResearch N/A 375 mk
Military OutpostMilitary 900 mk 270 mk
Mining OutpostMining N/A 375 mk
Medical MerchantMedical Merchant N/A 300 mk
Engineer MerchantEngineer Merchant N/A 300 mk
Armory MerchantArmory Merchant 900 mk 270 mk
Children of The HonkmotherClown Merchant N/A 300 mk
The Church of HuskHusk Merchant N/A 300 mk
Identifier grenadelauncher
Categories Weapon
Tags mediumitem, weapon, gun, gunsmith, provocativetohumanai, mountableweapon

The Grenade Launcher is a Handheld Ranged Weapon in Barotrauma.


The Grenade Launcher is a two-handed long-range large firearm. It shoots 40mm Grenades of any kind and works underwater. Grenades launched from the Grenade Launcher will explode on impact, except for the 40mm Acid Grenade which will continue moving while spreading Acid for a short while after impact. The Grenade Launcher proves to be a versatile weapon, capable of providing unmatched single-shot damage, or to non-lethally Stun any character in an area. However, the relative expensiveness of its ammo and the associated explosions (which can be dangerous inside the Submarine) makes it necessary to properly evaluate a situation before shooting.

It cannot be crafted, however it can be bought at Outposts with a difficulty of at least 30%.


The Grenade Launcher is held with both hands and must be loaded with 40mm Grenade or 40mm Stun Grenade to be used. As with all weapons and tools, using it is done by holding the Right Mouse Right-click to take aim, then by Left Mouse Left-clicking to shoot/use. One should stand at least a room away from the point of impact to avoid the explosion.

  • It is advised to keep a distance from targets and cease fire if they get too close as the 40mm Grenades can damage the user.
  • It has six slots for ammunition which can contain 40mm Grenades of any kind.
  • Like most two-handed weapons, the Grenade Launcher has a Flashlight slot. The inserted Flashlight automatically turns on whenever the weapon is drawn.
  • 40mm Grenades can deal damage to Ballast Flora.
  • Due to the Grenade Launcher's size, it cannot be carried in the hotbar. To carry it must be held in both hands, or in the Gear slot, which hangs it from the character's back.

Damage Values

ItemShots Afflictions Armor PenetrationStructure Damage Explosion Range

40mm Acid Grenade
Explosion (5m):
 Acid Burn (20)*
 Acid Burn (10)* (20% chance)
 Stun (0.5)*
0% 5 meters

40mm Grenade
Explosion (3m):
 Bleeding (400)* (5% chance)
 Burn (100)*
 Stun (5)*
Impact: 40
Explosion (3m): 20
3 meters

40mm Mini Nuke
 Burn (100)*
 Bleeding (50)*
 Stun (5)*
Explosion (5m):
 Burn (200)*
 Bleeding (40)* (5% chance)
 Stun (10)*
Explosion (10m):
 EMP (20)*
Impact: 40
Explosion (5m): 300
5 meters

40mm Stun Grenade
Explosion (3m):
 Stun (15)*
0% 3 meters


Submarine Weapons
Large Turrets
Handheld Weapons
Ranged Weapons
Melee Weapons
Ammunition & Explosives