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Rifle Ammo Mutation
Warframe · Mod

Rifle Ammo Mutation

Rifle ammunition mutation mod

Released Jul 26, 2013

Rifle Ammo Mutation converts secondary-ammo pickups into rifle ammunition. Consider it when using a rifle that runs short while other ammunition pickups remain available.

TypeAssault RiflePolaritynaramonMax rank5Base drain2VariantStandardRarityRare
Rifle Ammo Mutation GUIDE

Understand Rifle Ammo Mutation

Useful when…

  • Improve rifle ammunition supply by converting secondary-ammo pickups.
  • Use its exilus slot when ammunition continuity is more useful than another exilus effect.

What it does

At rank 0, the mod converts secondary-ammo pickups to 8% of their ammo pickup amount; at rank 3, 33%; and at rank 5, 50%. It does not turn every pickup into a full rifle pickup: the converted amount is a fraction of the pickup amount. Its practical value depends on finding secondary ammo while your rifle needs ammunition.

wiki.warframe.com ↗

Fit and investment

This Rare standard Rifle mod fits the exilus slot, has Naramon polarity, base drain 2, and a maximum rank of 5. Ranking it raises conversion from 8% to 50%; the listed step from rank 4 to 5 costs 480 Endo and 23,184 Credits. A low-rank copy can provide some conversion, while higher investment gives more from each eligible pickup. The mod is explicitly incompatible with Primed Rifle Ammo Mutation, so those two cannot be equipped together. The Primed version lists 92% conversion, but it is a standard-slot mod rather than an exilus mod.

wiki.warframe.com ↗

When it helps

Use it when ammunition pickups for other weapon types are available but your rifle needs more reserves. It converts secondary ammo specifically; it does not list conversion from pistol or shotgun pickups. Guided Ordnance is another exilus mod, but its listed effect is improved accuracy while aiming after a hit, not ammunition conversion, so it serves a different purpose.

Limitations and tradeoffs

  • The conversion is partial, especially at low ranks, and applies to secondary-ammo pickups only.
  • It occupies an exilus slot; the Primed version has a different slot type and is explicitly incompatible.

Common mistakes to avoid

  • Expecting it to convert pickups other than secondary ammo.
  • Expecting the listed conversion percentage to provide a full rifle ammo pickup.
  • Trying to equip it together with Primed Rifle Ammo Mutation.

Effects and reference details

Rank effects and investment

RankListed effectsUnpolarized drainTotal Endo from rank 0Total Credits from rank 0
0Converts Secondary ammo pickups to 8% of Ammo Pick Up.200
1Converts Secondary ammo pickups to 16% of Ammo Pick Up.3301,449
2Converts Secondary ammo pickups to 25% of Ammo Pick Up.4904,347
3Converts Secondary ammo pickups to 33% of Ammo Pick Up.521010,143
4Converts Secondary ammo pickups to 42% of Ammo Pick Up.645021,735
5Converts Secondary ammo pickups to 50% of Ammo Pick Up.793044,919

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

Rifle Ammo Mutation — 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
2Target slot drain
RankObserved effectDrainEndo from 0Credits from 0
0Converts Secondary ammo pickups to 8% of Ammo Pick Up.200
1Converts Secondary ammo pickups to 16% of Ammo Pick Up.3301,449
2Converts Secondary ammo pickups to 25% of Ammo Pick Up.4904,347
3Converts Secondary ammo pickups to 33% of Ammo Pick Up.521010,143
4Converts Secondary ammo pickups to 42% of Ammo Pick Up.645021,735
5Converts Secondary ammo pickups to 50% of Ammo Pick Up.793044,919

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

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