Rubedo-Lined Barrel GUIDE
Understand Rubedo-Lined Barrel
Useful when…
- Add a direct damage bonus to a compatible Archgun.
- Use it when a Madurai-polarity standard slot fits your setup.
What does it do?
The mod increases Archgun damage: +16.7% at rank 0, +66.6% at rank 3, and +100% at rank 5. These are mod bonuses, not the weapon’s final damage.
Where does it fit?
It is a standard Archgun mod with Madurai polarity, base drain 6, and maximum rank 5. Primed Rubedo-Lined Barrel is explicitly incompatible, so the two cannot be equipped together.
How far should you rank it?
Ranking raises the damage bonus, while the listed rank 4-to-5 step costs 320 Endo and 15,456 Credits. Consider the final rank when the additional bonus is worth that investment to your Archgun setup. Primed Rubedo-Lined Barrel has a higher listed maximum bonus of +187%, but it has its own rank progression and is incompatible with this mod.
Limitations and tradeoffs
- Higher ranks require increasing fusion costs.
- Cannot be equipped alongside Primed Rubedo-Lined Barrel.
Common mistakes to avoid
- Treating the listed percentage as final damage.
- Trying to equip the Primed and standard versions together.