Rifle Ammo Mutation is an assault rifle mod that converts any unused Secondary Ammo into Primary Ammo. The affected rifle will only convert ammo while equipped, and will not convert any ammo type used by holstered secondary weapons until their own ammo is full.
Converted ammo is denoted by a 
symbol. The final amount of ammo restored is rounded to the nearest integer.
Stats[]
| Rank | Effect | Cost |
|---|---|---|
| 0 | 8.4% | 2 |
| 1 | 16.8% | 3 |
| 2 | 25.2% | 4 |
| 3 | 33.6% | 5 |
| 4 | 42% | 6 |
| 5 | 50.4% | 7 |
Acquisition[]
- This mod was originally awarded to players who participated in Operation Sling-Stone.
- This mod is now available from Survival and Excavation missions.
Drop Locations[]
Mission Drop Tables
| Mission Type | Source | Rotations or Drop Table |
Chance[1] | Quantity[2] | Avg. per roll[3] | Star Chart Nodes |
|---|---|---|---|---|---|---|
| Excavation | Tier 3 Excavation | C | 3.76% | 1 | 0.0376 | |
| Excavation | Tier 2 Excavation | C | 3.76% | 1 | 0.0376 | |
| Excavation | Tier 1 Excavation | C | 3.76% | 1 | 0.0376 | |
| Survival | Tier 3 Survival | C | 3.76% | 1 | 0.0376 | |
| Survival | Tier 2 Survival | C | 3.76% | 1 | 0.0376 | |
| Survival | Kuva Fortress Survival | C | 4% | 1 | 0.04 | |
| Survival | Tier 1 Survival | C | 3.76% | 1 | 0.0376 | |
| The Circuit | Tier 4 The Circuit (Normal) | A | 1.49% | 1 | 0.0149 |
Accessed through Duviri's The Circuit gamemode |
| The Circuit | Tier 6 The Circuit (Normal) | A | 1.03% | 1 | 0.0103 |
Accessed through Duviri's The Circuit gamemode |
Enemy Drop Tables
| Enemy | Drop Table Chance[4] | Item Chance[5] | Chance[6] | Expected Kills[7] | Quantity[8] | Avg. per roll attempt[9] |
|---|
Sourced from the official drop table repository. See Module:DropTables/data to edit on the wiki.
Tips[]
- Good for weapons with poor ammo economy, such as the
Grakata. - Functions well with Sentinel's Vacuum or Chesa Kubrow's Retrieve, which automatically collect unused ammo as needed.
Gallery[]
Pre-Update 14.5 (2014-08-28) Appearance
Patch History[]
Update 32.0 (2022-09-07)
- Rifle Ammo Mutation: Now converts Secondary ammo pickups to 50% of Ammo Pick Up.
Update 29.5 (2020-11-19)
- Fixed inability to equip Rifle Mutation Mods on the Veldt.
Update 26.0 (2019-10-31)
- Now an Exilus Weapon mod.
- Mod capacity drain from 9 to 7.
Hotfix 25.7.2 (2019-08-30)
- Acceltra can now equip Rifle Ammo Mutation Mod.
Update 15.0 (2014-10-24)
- Players can now upgrade Rifle, Arrow, Shotgun and Sniper Ammo Mutation Mods from max Rank 3 to max Rank 5 with increased effectiveness.
Hotfix 12.4.3 (2014-03-10)
- Fixed Rifle Ammo Mutation mod not being compatible with Boltor Prime.
Update 9.3 (2013-07-26)
- New Ammo Mutator mods: converts unused ammo to select ammo type (Pistol, Shotgun, Rifle, Sniper, Bow).
| Ammo Mods | |
|---|---|
| Sentinels |  Ammo Case
|
| Reserve Ammo | Ammo Drum • Shell Compression • Trick Mag
|
| Magazine Capacity | Ammo Stock • Atomic Fallout • Magazine Warp ( Prime) • Shotgun Elementalist • Slip Magazine ( Prime) • Wildfire • Ice Storm • Tainted Mag • Tainted Clip • Burdened Magazine
|
| Ammo Mutation | Rifle Ammo Mutation ( Prime) • Sniper Ammo Mutation ( Prime) • Shotgun Ammo Mutation ( Prime) • Pistol Ammo Mutation ( Prime) • Arrow Mutation • Vigilante Supplies
|
| Ammo Pickup | Amalgam Daikyu Target Acquired • Rifle Scavenger • Shotgun Scavenger • Sniper Scavenger • Pistol Scavenger
|
| Ammo Efficiency | Skull Shots • Brain Storm
|
| Ammo Refund | Blood For Ammo • Wild Frenzy
|
| PvP | Maximum Capacity • Loaded Capacity • Full Capacity • Hydraulic Gauge • Hydraulic Chamber • Hydraulic Barrel • Draining Gloom
|
- ↑ Chance to roll item within drop table
- ↑ Amount rewarded on successful roll
- ↑ (Quantity × Chance)
- ↑ Chance to roll drop table
- ↑ Chance to roll item within drop table
- ↑ (Drop Table Chance × Item Chance)
- ↑ (1 / Chance), see WARFRAME Wiki:Expected & Nearly Guaranteed Numbers for more details
- ↑ Amount rewarded on successful roll
- ↑ (Quantity × Chance), average item quantity on a roll attempt (successful or not)