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Tainted Mag
Warframe · Mod

Tainted Mag

Assault rifle mod that increases magazine capacity and reduces reload speed.

Released Oct 9, 2013

Tainted Mag increases Assault Rifle Magazine Capacity by up to 66% while reducing Reload Speed by up to 33%. Consider it when sustained firing between reloads is more useful than faster reloads; it is a standard mod with Naramon polarity.

TypeAssault RiflePolaritynaramonMax rank10Base drain4VariantStandardRarityRare
Tainted Mag GUIDE

Understand Tainted Mag

Useful when…

  • Increase the magazine capacity of an assault rifle when a longer firing interval is useful.
  • Use when the reload penalty is acceptable for the weapon and build.

Effect and slot fit

At rank 0, Tainted Mag provides +6% Magazine Capacity and −3% Reload Speed; rank 5 gives +36% and −18%; rank 10 gives +66% and −33%. It is a Rare, standard Assault Rifle mod with Naramon polarity and base drain 4. No incompatible names are listed.

Rank costs and tradeoff

The listed rank 9 to 10 step costs 15,360 Endo and 741,888 Credits for the final increase to +66% capacity, alongside the full −33% reload penalty. Rank 5 is listed at +36% capacity and −18% reload speed, which may be a useful stopping point if the final step’s cost and penalty do not fit the build. Maximum Capacity offers a smaller capacity bonus with a smaller reload penalty; Loose Hatch adds Reload Speed but also Weapon Recoil, while Hydraulic Gauge reduces recoil and magazine capacity.

wiki.warframe.com ↗

Use in a rifle setup

The bonus applies to assault rifles and occupies a standard slot. Assess the capacity increase together with its reload penalty; the mod does not supply damage, fire rate, or recoil changes.

wiki.warframe.com ↗

Limitations and tradeoffs

  • Magazine capacity rises while Reload Speed falls, with both changes growing by rank.
  • The last rank has a high listed Endo and Credit cost.

Common mistakes to avoid

  • Considering only magazine size while overlooking the simultaneous reload penalty.
  • Assuming the final rank is an efficient investment without weighing its listed cost and added penalty.

Effects and reference details

Rank effects and investment

RankListed effectsUnpolarized drainTotal Endo from rank 0Total Credits from rank 0
0+6% Magazine Capacity
-3% Reload Speed
400
1+12% Magazine Capacity
-6% Reload Speed
5301,449
2+18% Magazine Capacity
-9% Reload Speed
6904,347
3+24% Magazine Capacity
-12% Reload Speed
721010,143
4+30% Magazine Capacity
-15% Reload Speed
845021,735
5+36% Magazine Capacity
-18% Reload Speed
993044,919
6+42% Magazine Capacity
-21% Reload Speed
101,89091,287
7+48% Magazine Capacity
-24% Reload Speed
113,810184,023
8+54% Magazine Capacity
-27% Reload Speed
127,650369,495
9+60% Magazine Capacity
-30% Reload Speed
1315,330740,439
10+66% Magazine Capacity
-33% Reload Speed
1430,6901,482,327

These are listed mod effects and fusion costs, not final build damage. Matching and mismatched polarities change capacity. Totals assume starting at rank 0.

References and version

Game data version: Pinned public export

Tainted Mag — WARFRAME Wiki ↗wiki.warframe.com ↗
Technical source data for verification

These machine-readable game records support the calculations and factual checks. The wiki references above are intended for reading.

Warframe Public Export ↗Raw game data (JSON) ↗wiki.warframe.com ↗

Original data record ↗

Optional: calculate an upgrade or configurationOpen the calculator when you want a cost estimate or a compatibility check.
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Fusion cost and capacity

0Endo
0Credits
4Target slot drain
RankObserved effectDrainEndo from 0Credits from 0
0+6% Magazine Capacity · -3% Reload Speed400
1+12% Magazine Capacity · -6% Reload Speed5301,449
2+18% Magazine Capacity · -9% Reload Speed6904,347
3+24% Magazine Capacity · -12% Reload Speed721010,143
4+30% Magazine Capacity · -15% Reload Speed845021,735
5+36% Magazine Capacity · -18% Reload Speed993044,919
6+42% Magazine Capacity · -21% Reload Speed101,89091,287
7+48% Magazine Capacity · -24% Reload Speed113,810184,023
8+54% Magazine Capacity · -27% Reload Speed127,650369,495
9+60% Magazine Capacity · -30% Reload Speed1315,330740,439
10+66% Magazine Capacity · -33% Reload Speed1430,6901,482,327

Slot polarity changes drain; fusion prices depend on mod rarity and family.

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