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Ammo Drum increases the maximum amount of rifle ammunition your Warframe can carry for that weapon.

Stats[]

Normal
Rank Effect Cost
0 +15% 2
1 +30% 3
2 +45% 4
3 +60% 5
4 +75% 6
5 +90% 7


Flawed
Rank Effect Cost
0 2.5% 2
1 5% 3
2 7.5% 4
3 10% 5

Drop Locations[]

Mission Drop Tables

Enemy Drop Tables

Enemy Drop Table Chance[4] Item Chance[5] Chance[6] Expected Kills[7] Quantity[8] Avg. per roll attempt[9]
Axio Crewman 3% 25.29% 0.7587% 132 1 0.007587
Axio Engineer 3% 25.29% 0.7587% 132 1 0.007587
Axio MOA 3% 25.29% 0.7587% 132 1 0.007587
Axio Tech 3% 25.29% 0.7587% 132 1 0.007587
Corpus Power Carrier 3% 25.29% 0.7587% 132 1 0.007587
Crewman 3% 25.29% 0.7587% 132 1 0.007587
Deimos Mutalist Osprey Carrier 3% 25.29% 0.7587% 132 1 0.007587
Denial Bursa 3% 25.29% 0.7587% 132 1 0.007587
Drover Bursa 3% 25.29% 0.7587% 132 1 0.007587
Eidolon Vomvalyst 5% 25.29% 1.2645% 79 1 0.012645
Grineer Power Carrier 3% 25.29% 0.7587% 132 1 0.007587
Hellion Power Carrier 3% 25.29% 0.7587% 132 1 0.007587
Isolator Bursa 3% 25.29% 0.7587% 132 1 0.007587
Juno Crewman 3% 25.29% 0.7587% 132 1 0.007587
Juno Dera MOA 3% 25.29% 0.7587% 132 1 0.007587
Juno Disc MOA 3% 25.29% 0.7587% 132 1 0.007587
Juno Elite Crewman 3% 25.29% 0.7587% 132 1 0.007587
Juno Geminex MOA 3% 25.29% 0.7587% 132 1 0.007587
Juno Glaxion MOA 3% 25.29% 0.7587% 132 1 0.007587
Juno Tech 3% 25.29% 0.7587% 132 1 0.007587
Kuva Hellion Carrier 3% 25.29% 0.7587% 132 1 0.007587
Kuva Power Carrier 3% 25.29% 0.7587% 132 1 0.007587
MOA 3% 25.29% 0.7587% 132 1 0.007587
Minima MOA 3% 25.29% 0.7587% 132 1 0.007587
Mutalist Osprey Carrier 3% 25.29% 0.7587% 132 1 0.007587
Narmer Crewman 3% 25.29% 0.7587% 132 1 0.007587
Narmer Dera MOA 3% 25.29% 0.7587% 132 1 0.007587
Narmer Disc MOA 3% 25.29% 0.7587% 132 1 0.007587
Narmer Geminex MOA 3% 25.29% 0.7587% 132 1 0.007587
Narmer Glaxion MOA 3% 25.29% 0.7587% 132 1 0.007587
Narmer Tech 3% 25.29% 0.7587% 132 1 0.007587
Nightwatch Carrier 3% 25.29% 0.7587% 132 1 0.007587
Orb Vallis - Enrichment Labs Enemies 5% 34.55% 1.7275% 58 1 0.017275
Orm Crewman 3% 25.29% 0.7587% 132 1 0.007587
Orm Engineer 3% 25.29% 0.7587% 132 1 0.007587
Orm MOA 3% 25.29% 0.7587% 132 1 0.007587
Orm Tech 3% 25.29% 0.7587% 132 1 0.007587
Ratel 3% 25.29% 0.7587% 132 1 0.007587
Tarask Bursa 3% 25.29% 0.7587% 132 1 0.007587
Taro Crewman 3% 25.29% 0.7587% 132 1 0.007587
Taro Engineer 3% 25.29% 0.7587% 132 1 0.007587
Taro MOA 3% 25.29% 0.7587% 132 1 0.007587
Taro Tech 3% 25.29% 0.7587% 132 1 0.007587
Vapos Crewman 3% 25.29% 0.7587% 132 1 0.007587
Vapos MOA 3% 25.29% 0.7587% 132 1 0.007587
Vorac Crewman 3% 25.29% 0.7587% 132 1 0.007587
Vorac Engineer 3% 25.29% 0.7587% 132 1 0.007587
Vorac MOA 3% 25.29% 0.7587% 132 1 0.007587
Vorac Tech 3% 25.29% 0.7587% 132 1 0.007587

Sourced from official drop table repository.

Notes[]

  • For any non-integer maximum ammo capacity values the capacity is rounded down to the nearest whole number. For example, a Lanka Lanka modded with a max rank Ammo Drum will have a calculated maximum ammo capacity of 72 × (1 + 90%) = 136.8, which will round down to 136.

Gallery[]

Trivia[]

  • The damaged version of Ammo Drum, along with 1 credit, were offered as a reward for a one hour long Infested Survival alert on the 2016 April Fools' Day.

Patch History[]

Update 26.0 (2019-10-31)

  • Ammo Drum increased to +90% Ammo
  • Is now an Exilus Weapon mod.

Vanilla (2012-10-25)

  • Introduced.
  1. Chance to roll item within drop table
  2. Amount rewarded on successful roll
  3. (Quantity × Chance)
  4. Chance to roll drop table
  5. Chance to roll item within drop table
  6. (Drop Table Chance × Item Chance)
  7. (1 / Chance), see WARFRAME Wiki:Expected & Nearly Guaranteed Numbers for more details
  8. Amount rewarded on successful roll
  9. (Quantity × Chance), average item quantity on a roll attempt (successful or not)
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