Deadly Efficiency
- Polarity
- Madurai
- Rarity
- Rare
- Drain
- 4 → 9
- Fits
- Archgun
(Stats)
- On Reload From Empty: +120% Damage for 9s
Curated and corroborated — the export and the wiki independently state the same effect. None of this mod's effect is counted in a build's stats.
- Outside the engine: On Reload From Empty: +120% Damage for 9s
Drain by rank
- R0 4
- R1 5
- R2 6
- R3 7
- R4 8
- R5 9
A matching polarity halves the drain, rounded up; a mismatched one costs more than no polarity at all.
How to get Deadly Efficiency
Deadly Efficiency drops in 6 places. The best odds are 1.25% at Venus/Orb Vallis (Bounty Completion), rotation C.
Missions 5
| Where | Rotation | Chance |
|---|---|---|
| Exo Elite Lancer | — | — |
| Exo Butcher | — | — |
| Exo Raider Carver | — | — |
| Exo Raider Eviscerator | — | — |
| Exo Raider | — | — |
Bounties 1
| Where | Rotation | Chance |
|---|---|---|
| Venus/Orb Vallis (Bounty Completion) | C | 1.25% |
Chances are per reward roll. Where a mission appears in more than one reward table, the best figure is the one shown.
(Information)
- Introduced
- 24.2
- Max rank
- 5
- Tradable
- Yes
- Transmutable
- Yes
- Exilus slot
- No
Cannot be equipped with
Primed Deadly Efficiency
(Sources)
Polarity, drain, rarity, compatibility and the card art come from the game export (snapshot 30 Sept 2026). Introduction version, tradability, mod sets and the drop tables come from the WARFRAME Wiki, CC BY-SA. Whether an effect is curated is our own judgement, recorded per mod.
(Where it goes)
- Listed among Arch-Gun Mods
(Mods that touch on the same things)
Mods whose effect names the same thing and that fit the same place — archgun. Naming a thing is not doing it: a mod here may only mention it in passing.