The AR/GL-21 “One-Two” has a simple idea behind it: combine a light-armor-penetrating assault rifle with a built-in grenade launcher and give players a primary weapon that can handle more situations. In Helldivers 2, that flexibility can make a difference when a mission suddenly changes from routine patrol fighting to structure destruction or crowd control. Players comparing Helldivers 2 Items will find that the One-Two takes a slightly different approach from a standard rifle because part of its value comes from knowing when to switch to its secondary firing option.

The weapon becomes more interesting after Patch 1.007.100, which increased the ammunition available to the underbarrel launcher. That means Helldivers 2 Items are not the only consideration when planning a loadout. How you manage the One-Two's grenade supply can also determine how much utility you get from the weapon during a mission.

The New Ammo Economy

Patch 1.007.100 increased the AR/GL-21 launcher from two starting grenades to three. The maximum spare ammunition increased from three to five, while resupplies now provide five rounds instead of three.

Those numbers give the launcher much more breathing room.

Previously, it was easy to think twice before using a grenade because the available supply was small. Now there is a little more freedom to use the launcher during ordinary objectives while still keeping ammunition for later.

However, the basic rule has not changed: explosive ammunition should be spent where it provides extra value.

Why Individual Light Targets Are Poor Choices

A single light enemy usually is not worth an underbarrel grenade.

The rifle portion of the AR/GL-21 can handle routine enemies, while the launcher provides explosive medium-armor penetration. Using an explosive round on an enemy that could be eliminated with ordinary rifle fire simply trades valuable utility for convenience.

This is especially important early in a mission when you do not know how much ammunition you will need later.

Instead, wait for situations where several targets overlap or where an explosive attack can remove an important objective. The launcher is much more valuable when one round can accomplish something that several rifle shots would struggle to do.

Save the Launcher for Structures

Automaton Fabricators are excellent targets for the AR/GL-21.

The glowing exhaust vents provide a useful aiming point, while the front opening can be targeted when the door is open. Taking the time to line up these shots can let you attack the structure without immediately moving into close range.

This is one of the weapon's strongest advantages because the launcher gives a primary weapon access to a type of utility that normally requires another part of the loadout.

The additional ammunition from Patch 1.007.100 also means you can attempt these shots more comfortably during a long mission.

Keep Your Distance From Bug Nests

Terminid Bug Holes are another high-value target.

If you have a clear line of sight, firing directly into the opening can destroy the hole from a distance. This can be safer than running into a crowded nest just to use a throwable grenade.

It also gives the AR/GL-21 a practical role during nest-clearing objectives. Instead of thinking of the launcher as something you use only when enemies surround you, you can deliberately save rounds for structures that need to be removed.

Good positioning remains important. If the nest is covered by enemies, take care of the immediate threat first rather than forcing an awkward shot.

Break Up Enemy Groups

Crowd control is another situation where the launcher earns its ammunition.

When a patrol suddenly appears, try to identify where the enemies are concentrated. A grenade placed in the center of a group can damage multiple targets at once.

Devastators can also become worthwhile targets when they are packed together. Even if one explosion does not eliminate every enemy, reducing the health of several medium-armored threats can make the next part of the fight easier.

This is more efficient than firing explosive rounds at isolated enemies one at a time.

Look for Soft Targets

The AR/GL-21 can also help against tougher Terminids when you target exposed anatomy.

Bile Spewers have large vulnerable soft areas, while Brood Commanders can expose their backs and other unarmored sections during combat. Explosive damage is more useful when it lands on these vulnerable areas instead of being thrown into heavy armor.

The launcher is not a replacement for dedicated anti-heavy weapons. Think of it as an additional option that can become valuable when the right weak point is already available.

That distinction keeps the weapon practical without expecting it to solve every enemy type.

Build Around the One-Two

The AR/GL-21 works particularly well for players who enjoy having multiple answers available without carrying a separate tool for every situation.

Your rifle handles ordinary combat. Your launcher handles structures, clustered enemies, and selected vulnerable targets. Your throwable grenade can then be chosen for a specialized purpose such as stunning enemies or dealing with tougher threats.

The ammunition increase makes this approach easier because you have more rounds available throughout a mission. Players looking for additional loadout options can also buy HD2 Items to experiment with different setups, while the One-Two itself rewards careful ammunition management more than constant trigger pulling.

The Main Lesson

The AR/GL-21 is not about firing grenades as often as possible. It is about making each grenade solve a problem efficiently.Destroy a Fabricator, close a Bug Hole, break up a dangerous patrol, or hit an exposed weak point. Those are the moments when the launcher earns its place.With Patch 1.007.100 providing more starting, spare, and resupply ammunition, the One-Two has more freedom to play that utility role. Once you stop treating every enemy as a grenade target, the weapon becomes a much more flexible part of a Helldivers 2 loadout.