Warframe Is Capping Ammo Efficiency and Removing Riven Dispositions

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Digital Extremes is making two major Riven-related changes to Warframe in a hotfix planned for Thursday. Ammo Efficiency will be capped at 75%, and the long-running Riven Disposition system is being retired.

The Ammo Efficiency change comes after Riven Splicers made the stat easier to access, which in turn made infinite ammo builds more consistent. DE says it still wants infinite ammo to exist in specific cases, but not as a permanent, build-defining setup.

  • Ammo Efficiency from combined sources will cap at 75%, so one in four shots will still consume ammo.
  • The cap applies to anything that uses ammo, including Necramechs and Amps.
  • Effects that were intentionally designed to grant 100% Ammo Efficiency will now be described as Infinite Ammo and will keep working, including Void Relic cracking buffs and several weapon-specific perks.
  • Arcane Pistoleer is being changed from +102% Ammo Efficiency to a chance to grant Infinite Ammo for 12 seconds on pistol weak point kills.
  • Brain Storm for Grakata and Skull Shots for Viper will now have a chance to grant Infinite Ammo on headshots.

The bigger economy shake-up is the end of Riven Dispositions. Instead of each weapon having its own multiplier, all Rivens will use the same stat range, equivalent to a 1.2 Disposition. That means some low-Disposition weapons, like Nataruk and Grimoire, will see large increases, while some high-Disposition weapons and standout Incarnon options will come down.

Riven trading is disabled until the Thursday hotfix goes live, with failed trade attempts showing “Failed to make offer.” DE says the goal is to remove constant Disposition adjustments, make new weapon Rivens useful on day one, and stop Disposition from being a factor in Riven comparisons.

Players who log in after the hotfix and before December 31, 2026 at 11:59 p.m. ET will receive 1 Built Forma and 100,000 Kuva. Anyone who installed a Riven Splicer into a Riven Mod before the hotfix will also get 1 Riven Splicer and another 100,000 Kuva in a separate inbox message.

Further reading: Official Warframe Dev Workshop on Ammo Efficiency and Riven Dispositions