Ordnance is a new addition to Borderlands 4, bringing forth a new skill for all players that will unleash even deeper layers of buildcrafting and mayhem. As players jump into Kairos and fight against the Rippers and Order alike, it's going to be essential to know everything on offer, including that of Ordnance weapons. These powerhouses can make every boss fight a breeze, so long as players know what they are, the types of Ordnance players can find, and why they're worth investing in.

All Ordnance Weapon Types in Borderlands 4

Ordnance is split into two categories: Grenades and Heavy Weapons. Below, we've compiled the Ordnance weapons that players can come across in their own worlds:

Weapon Type

Ordnance Type

How it Works

Light Machine Gun

Heavy Weapon

Hold the trigger to make the barrels shoot faster, expunging more ammo but increasing DPS.

Rocket Launcher

Heavy Weapon

Hold the trigger for faster-firing rockets for deadly explosives, just be mindful of using it up close.

Plasma Cannon

Heavy Weapon

Hold the trigger to see a crackling beam stick to enemies for ticking damage.

Grenade

Grenade

Throw to see an explosive effect, which changes depending on the weapon manufacturer, meaning it might be an impact grenade, a splash grenade, or even a delayed one.

Throwing Knife

Grenade

Throw to see this projectile stab enemies, where aiming for heads and other critical hit spots will provide more damage.

What Are Ordnance Weapons?

firing a rocket launcher

Ordnance weapons are separate from the primary 4 weapons in your main slots, and instead, have their own dedicated slot. Players can activate their Ordnance weapon with R1/RB/G, which will equip them with the Ordnance weapon. These weapons have a cooldown upon use, which can range from a few seconds to well over 45 seconds, depending on the type of weapon equipped and how much ammo was used. The Ordnance slot is reserved for Grenades and Heavy Weapons, and cannot be fired during Fight for Your Life. However, Ordnance weapons deal immense damage, can come with Firmware (after Level 25), and even have dedicated Skills to invest into for each Vault Hunter to boost their power.

Rating block community and brand ratings Image
Borderlands 4 Tag Page Cover Art
Display card tags widget Display card system widget
Systems
Display card community and brand rating widget Display card open critics widget
Top Critic Avg: 82 /100 Critics Rec: 88%
Display card main info widget
Released
September 12, 2025
ESRB
Mature 17+ / Blood and Gore, Intense Violence, Sexual Themes, Strong Language, In-Game Purchases, Users Interact
Developer(s)
Gearbox Software
Publisher(s)
2K
Display card main info widget end Display card media widget start
Borderlands 4 Boss Comments on Fan Negativity Ahead of Game’s September Launch
Display card media widget end

WHERE TO PLAY

DIGITAL
Checkbox: control the expandable behavior of the extra info

Engine
Unreal Engine 5
Genre(s)
Looter Shooter, Action, Adventure, RPG