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Borderlands 4 Firewerks Review — Legendary Shield

Published: 7/26/2026 · Updated: 11/15/2026 · As of 2026-07 · Score 9/10

Red Text
...Maybe one more.

This is the early-game shield you suddenly realize you can’t take off. Firewerks is a Legendary armor shield dropped by Splashzone (the same boss that drops Lead Balloon). Every time you kill an enemy, homing missiles fly out on their own and deal extra damage. It adds damage just by being equipped, and it stays useful from the early game to the late game.

About names in this review The unique ability “Bundled”, the augment “Missile Swarm”, the red text and the missile damage (Bundled 3,732 / Missile Swarm 746) were checked in game. The numbers scale with level.

Red Text trivia

The red text ”…Maybe one more.” comes from the Risk of Rain 2 achievement ”…Maybe One More.” (according to the official Borderlands Wiki). That achievement unlocks the Risk of Rain 2 item “Bundle of Fireworks”, and this shield’s unique ability is called “Bundled”, a direct nod to the Bundle of Fireworks.

In Risk of Rain 2, Bundle of Fireworks makes homing fireworks fly out when you kill an enemy. That is exactly what Firewerks’ Bundled effect does (homing missiles on kill). The name, the red text and the unique ability together make a three-part homage to Risk of Rain 2.

What kind of shield is it? (for beginners)

• Armor type (3 segments). Unique ability “Bundled”: killing an enemy spawns missiles that home in on nearby enemies (3,732 damage each, scales with level)
• The missiles deal elemental splash damage (the element depends on the shield’s element roll). English-language guides say up to 4 missiles.
• It also always has the augment “Missile Swarm”: when the armor gauge breaks, it fires 3 extra missiles (746 damage each)
• The more kills you chain, the more missiles fly, so it adds damage just by being equipped. It is a “passive damage” shield

Unique effect (mechanics)

Bundled: Killing an enemy spawns missiles. The missiles home in on nearby enemies and deal 3,732 damage each (elemental splash, scales with level).

• Missiles fire automatically on every kill (chained kills snowball the number of missiles)
• Built-in augment “Missile Swarm”: when the armor gauge breaks, fires 3 missiles (746 damage each, scales with level)
• The missiles work as passive damage for every character, so the shield fits any build
• The 2025-12-11 update made missile spawns after kills more reliable (official changelog)

Augments (which roll to keep)

• The primary augment is basically always “Missile Swarm” (fires 3 missiles when the armor gauge breaks). This slot matches the first word of the item name, Barrage, and appeared on every one of our 30+ copies.
• ⚠️ One exception: copies whose first word is Mad instead of Barrage get an upgraded version with 5 missiles instead of 3 and ×1.5 damage (967 → 1,450 at Lv45). Barrage and Mad compete for the same slot as the “base” and “upgraded” versions.
• The secondary augment is random from 29 types (about 3.45% each). These add capacity, recovery, movement speed, damage resistance and so on. We have confirmed 22 types from our own copies so far.
• 💡 If no secondary word appears in the name, the copy has “Heavy Plate” (up to +20% damage reduction). It is not “no augment”; when the word is omitted, the slot falls back to its default (confirmed on two copies, Lv30 and Lv45).
• Our picks (analysis): resistance and damage-reduction augments that improve survival, or damage-up augments, fit an armor shield well

Drops and farming

Usable from the early game to the late game It comes from the same boss as Lead Balloon, so you can get it early. It is the most highly rated of Splashzone’s three drops, and level scaling keeps it useful for a long time.

Farming route

1. Fadefields → Coastal Bonescape → Riptide Grotto → boss “Splashzone”
2. After clearing the related story mission, use the Encore Machine next to the arena to reset the fight and farm it
3. Raising your UVHM rank adds +2% drop rate per rank (30% via Big Encore)

Build fit

Summary

• A Legendary armor shield considered the best of Splashzone’s three drops
• Up to 4 homing missiles on every kill, plus a follow-up volley when the armor breaks (Missile Swarm)
• Adds damage just by being equipped, and works with any build or character
• Rolls with an element are even more versatile
• Farm it from Splashzone (9%, with fast resets via the Encore Machine)
• Overall score: 9/10

Update history

2026-08-23 update

1. Corrected two misread names on the Japanese page (the item name and the augment name for the Stiff prefix). English names were not affected.
2. Expanded our recorded copies from 8 to 22 (from Lv42-43 only to Lv30-48). Since 2026-09-11 the page shows level-range summaries instead of listing each copy.
3. Added level scaling from measured values: Bundled, Missile Swarm and capacity all scale by +9% per level. We also note (unverified) that base capacity splits into three tiers even at the same level.
4. Added how the augments work: the first word Barrage maps to Missile Swarm, only Mad copies get the 5-missile ×1.5 upgrade, and copies without a secondary word default to “Heavy Plate”.
5. Replaced the full-name examples with names we actually observed in game.

Not yet updated (waiting for in-game checks) The “at Lv25” spec values are still the reference values from 2026-07. Our own measurements only cover Lv30 and above, so we have not changed them.

Measured stats (from our own copies)

These ranges come from the copies we own, read from screenshots. Each range is the observed minimum to maximum; nothing is converted, rounded or interpolated.

• At the same level and with the same prefix, capacity still varies by up to 48% (Lv31 Barrage: 1,919 – 2,835). The prefix alone does not decide performance; licensed parts and roll variation matter more.
• Prefixes observed (most common first): Barrage ×37 / Barrage Sidestepping ×12 / Barrage Generous ×8 / Barrage Chitinous ×7 / Barrage Protein-Rich ×6 / Barrage Lacking ×6

Related

• Same boss drops: Lead Balloon (shotgun) / Jelly (grenade)
• Same category (armor): Super Soldier / Watts 4 Dinner
• Same manufacturer (Torgue): Handcannon / Herald / Lead Balloon
• References: Lootlemon - Firewerks / MentalMars - Splashzone