Understand Primed Expel Infested
Useful when…
- Focusing a pistol build on damage to Infested.
- Using the stronger faction multiplier compared with regular or flawed Expel Infested.
Effect and target
The mod increases damage against Infested by a multiplier of x1.05 at rank 0, x1.3 at rank 5, and x1.55 at rank 10. The bonus is faction-specific and should be considered in that context, not as an unconditional pistol damage increase.
Slot and variants
It occupies a standard pistol slot and has Madurai polarity with base drain 4. It excludes Expel Infested and Flawed Expel Infested. Regular Expel Infested reaches x1.3 at rank 5, while the flawed version lists x1.1 at rank 3. Those are lower-bonus alternatives rather than mods that can be combined with the Primed version.
Fusion investment
The maximum rank is 10, and rank 5 already gives x1.3 against Infested. The step from rank 9 to 10 costs 20,480 Endo and 989,184 Credits to reach x1.55. Accelerated Isotope offers Radiation and Fire Rate in a standard pistol slot instead; that is a different type of benefit, not a faction-damage substitute.
Limitations and tradeoffs
- Its listed multiplier is limited to Infested targets.
- Maximum rank requires 20,480 Endo and 989,184 Credits from rank 9.
Common mistakes to avoid
- Treating the Infested multiplier as a general damage increase against every faction.
- Trying to equip regular or flawed Expel Infested alongside the Primed variant.






