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Barrel Diffusion
Warframe · Mod

Barrel Diffusion

Pistol multishot mod

Released Oct 25, 2012

Barrel Diffusion increases a pistol’s multishot, making it a direct choice for pistol builds that want the listed multishot bonus. It is a standard-slot mod with Madurai polarity.

TypePistolPolaritymaduraiMax rank5Base drain6VariantStandardRarityRare
Barrel Diffusion GUIDE

Understand Barrel Diffusion

Useful when…

  • Increasing multishot on a pistol.

Effect and fit

The mod grants +20% multishot at rank 0, +80% at rank 3, and +120% at rank 5. Its base drain is 6 and it fits pistols.

Ranking and alternatives

It has five ranks. The listed rank 4 to 5 step costs 480 Endo and 23,184 Credits. Flawed Barrel Diffusion has a lower +40% maximum. Galvanized Diffusion lists +110% and adds +30% multishot for 20 seconds on kill, stacking up to four times. Amalgam Barrel Diffusion lists +110% multishot and +60% dodge speed. Each is a separate incompatible version rather than an extra Barrel Diffusion slot.

wiki.warframe.com ↗

Limitations

Barrel Diffusion is pistol-compatible and occupies a standard slot. Its listed effect is multishot, not a specified final damage result. The named Flawed, Amalgam, and Galvanized versions are explicitly incompatible, so choose among the variants rather than attempting to combine them.

Limitations and tradeoffs

  • The highest listed rank step costs 480 Endo and 23,184 Credits.
  • The alternative variants offer distinct bonuses but are incompatible with this mod.

Common mistakes to avoid

  • Using it on a rifle or other non-pistol weapon.
  • Treating multishot percentage as final damage.
  • Attempting to equip it together with the incompatible Flawed, Amalgam, or Galvanized variant.

Effects and reference details

Rank effects and investment

RankListed effectsUnpolarized drainTotal Endo from rank 0Total Credits from rank 0
0+20% Multishot600
1+40% Multishot7301,449
2+60% Multishot8904,347
3+80% Multishot921010,143
4+100% Multishot1045021,735
5+120% Multishot1193044,919

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

Barrel Diffusion — 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
6Target slot drain
RankObserved effectDrainEndo from 0Credits from 0
0+20% Multishot600
1+40% Multishot7301,449
2+60% Multishot8904,347
3+80% Multishot921010,143
4+100% Multishot1045021,735
5+120% Multishot1193044,919

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

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