The underslung grenade launcher in Battlefield 6 looks simple enough, but it takes experience and preparation to use efficiently.
It’s not automatically attached to your rifle, and it doesn’t come as a free bonus. It works as an addition to your gadget system meant for calculated plays.
Many players have found it confusing at first, especially since the game doesn’t clearly explain how the attachment system works or how to activate it in the field.
How Do You Equip the Underslung Launcher?
You can only use the launcher when the Underslung Mount and a compatible grenade-launcher gadget are both active.
Select a weapon that supports the mount, usually an assault rifle, and attach the Underslung Rail from the Gunsmith menu.
However, this mount on its own doesn’t grant you a grenade launcher.
You’ll still need to equip one of the launcher types, such as M320A1 HE (high explosive), M320A1 THRM (thermobaric), or M320A1 SMK (smoke), in one of your gadget slots.
After equipping both the mount and the gadget, the game automatically connects them so the launcher attaches under your rifle’s barrel.
On PC, it’s typically activated by pressing “4” or toggling through fire modes. On consoles, the right D-pad button usually switches between your primary fire and the underbarrel launcher.
If it still doesn’t appear in-game, it’s usually because of a minor bug or a missing gadget slot reported by several players on Reddit.
Remember the Underslung Mount isn’t a separate weapon. It just gives you faster access to the grenade launcher.
This means you can fire much quicker than if you had to pull out the launcher separately, but you’re still bound by the same ammo limitations.
What Are the Limitations of the Underslung Launcher?
Battlefield 6’s grenade launcher behaves quite differently from older games in the series.
Its blast radius is small, and the area-of-effect (AoE) damage is limited, so direct hits are far more important than before.
A well-placed shot can still secure a kill, but anything less than that usually only suppresses enemies instead of finishing them off.
The ability to break solid walls or static cover with grenades and rockets has been removed.
This shift makes the launcher less of a breaching weapon and more of a tactical supplement for infantry control or light anti-vehicle use.
It looks like the developers tuned it deliberately for balance, so launchers wouldn’t dominate in tight encounters.
Despite these limitations, the launcher still has valuable uses. The thermobaric variant can ignite or stun enemies, creating openings for your team to advance.
Smoke rounds are excellent for breaking sightlines during pushes or revives.
Even with its reduced explosive power, it’s an effective tool when used with purpose and timing.
How Can You Use It Effectively in Combat?
Focus on landing accurate shots and keeping good positioning, since the launcher’s small blast radius means a near miss won’t do much beyond giving your target a heads-up.
Place rounds at an enemy’s feet or the ground beside them — it performs best in cramped spaces like hallways, doorways, stairwells, and capture points.
Many experienced players prefer using it in Hardcore modes because of the increased damage multiplier.
The fact that even near misses punish enemies more makes the launcher especially satisfying to use.
On standard servers, it’s often most effective for driving enemies out of entrenched spots before finishing them with your rifle.
Because the launcher sits under the rifle, swapping to it is almost instant, so reaction shots come faster.
This speed can make all the difference when ambushed or when defending an objective under heavy fire.
However, ammo is extremely limited, so every shot should count.
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