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Sniper Ammo Mutation is a sniper rifle mod that converts any unused Secondary Ammo into Primary Ammo. The affected weapon 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% | 2 |
| 1 | 16% | 3 |
| 2 | 25% | 4 |
| 3 | 33% | 5 |
| 4 | 42% | 6 |
| 5 | 50% | 7 |
Acquisition[]
- This mod was originally awarded to players who participated in Operation Sling-Stone.
- This mod is now available from Survival, Excavation, and Spy 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 | |
| Spy | Tier 3 Spy | C | 7.04% | 1 | 0.0704 | |
| Spy | Kuva Fortress Spy | B | 10% | 1 | 0.1 | |
| Survival | Tier 1 Survival | C | 3.76% | 1 | 0.0376 | |
| Survival | Kuva Fortress Survival | C | 4% | 1 | 0.04 | |
| Survival | Tier 3 Survival | C | 3.76% | 1 | 0.0376 | |
| Survival | Tier 2 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[]
- Functions well with Sentinel's
![Mod TT 20px](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="12" height="20"><rect fill-opacity="0"/></svg>)
Vacuum or 
Chesa Kubrow's Retrieve, which automatically collect unused ammo as needed.
Gallery[]
Pre-Update 14.5 (2014-08-28) Appearance
Patch History[]
Hotfix 32.3.3 (2023-02-17)
- Fixed being unable to equip Sniper Ammo Mutation on Snipers.
Update 32.3 (2023-02-15)
- Fixed weapons that formerly used Sniper ammo appearing when using the term “sniper” to search in the Arsenal despite not being categorized as a Sniper weapon.
- This would affect a weapon like the Lenz, which now uses Primary Ammo. It can still be found in the Arsenal when searching using the term “Bow”. You can still find your Rubico Prime using the term “Sniper”, so worry not!
Update 32.0 (2022-09-07)
- Sniper Ammo Mutation: Now converts Secondary ammo pickups to 50% of Ammo Pick Up.
Hotfix 31.1.7 (2022-02-23)
- Fixed the Sniper Ammo Mutation mod not mutating Rifle ammo at the described rate.
- For example, at Rank 0 you should receive 1 Sniper ammo per Rifle pickup and it was giving 0.
Update 27.4 (2020-05-01)
- Fixed the Sniper Ammo Mutation mod not appearing under the Exilus category in the Mod screen.
Update 26.0 (2019-10-31)
- Now an Exilus Weapon mod.
- Mod capacity drain from 9 to 7.
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.
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)
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66 comments
For some reason after 500h of playing I still don't have this.
Idk why, but I can equip it on Kuva Bramma
Because bows get their ammo from the sniper ammo pool if i am not mistaken
I can equip this on the miter, idk why.
For your Kuva Ogris, a R0 regular mod will suffice. Both R0 and Rmax give 1 ammo per converted pickup, even without a secondary weapon.
Kuva Ogris cannot equip this mod anymore though.
I'm pretty sure yesterday I have equipped it, though. I was wondering why it's got de-equipped, but I have just re-equipped it.
I think its got fixed recently, in the 32.3.3 Hotfix.
Cool, thanks for taking away the sniper ammo mutation for the Ogris, DE. Fucking assholes.
It got a primed version today :clem:
Doesn't seem like it can be modded on the Komorex.
According to the Komorex description, it already has a built-in one so it wouldn't make sense to have it twice.
Why does this not work on the penta? (The Penta uses Sniper ammo)
Are you sure it doesn't? Note that Sniper Ammo Mutation only works when you have your primary equipped. Other than that, it should work. It even works for Tonkor
I'm not sure what's going on either. I remember using this in the past on my Penta and I usually use rank 0 because I feel it's enough. I got the Secura Penta and I'm leveling it, I can equip it but it definitely does not work, at rank 0 anyway don't know about higher :\
So I'm kinda confused.. Why would I upgrade this to rank 5? Would it increase the number of ammo boxes mutated?
^that was my comment, just didn't log in.
I would assume so. The chart seems to suggest that you would get 8 sniper ammo per rifle/pistal ammo "box" with this mod at max rank, and only 1 at rank zero.
Depends on your needs. If you only need it to get by because of the craptastic sniper ammo drop rate, no. If you are constantly blowing your load because you can't aim or if there are mobs(high level, quantity or both) that warrant it, yes.
On a side note, this stupid mod doesn't show up in the primary tab.
It already wastes a slot, so you might as well max it out
Adding these to extraction missions was a godsend, far easier to farm now. I just got the arrow and sniper mutation on earth excavation in one 20-25 minute run (plus 35 of the event isotopes)
got it from arcadia (mars) 20 min
anyone knows if this one works on bows? i cant find it when i search on it on the weapon but i can find the mod in my inventory
It doesn't, bows have their own called Arrow mutation.
Just got it at E Gate (Venus) at 20 mins
This thing seems to drop more often than the other mutations, i'd say uncommonly but not rare, as a 20min survival reward on mercury (appolodorus).
In order of rarity;
[1. being the most rare, numbers in brackets indicate # of times dropped in 60 hours gameplay]
1.Rifle (1) 2. Pistol (1) 3. Arrow (2) 4. Shotgun (2) 5. Sniper (4)
Actually Rifle was most common for me :P I have like 3 of them :/
Got 2 rifles within the same day
That's cute, I have 5 Rifle Mutes, 4 Pistol Mutes, 2 Arrow Mutes, 1 Shotgun Mute and no Sniper Mutes. Is this even accurate?
does it work with Miter?
Actually the Miter currently still lists the Rifle Ammo Mutator as being compatable with it and it's been that way for a while now. It's probably a bug that DE never fixed (maybe on purpose so that more people could use the Miter since more players have the Rifle Ammo Mutator and it eats ammo when used uncharged).
Mercury, 20 mins Apollodorus.
Mimas 20 mins
Mercuri 20min
How does the MOD actually work? Says at Rank 0 will take 1 Pistol/Rifle ammo or 3 Shotgun ammo and do... what? I understand that it takes unused ammo and converts it into Sniper ammo, but what is the ratio of pistol/rifle ammo into Sniper ammo. At Rank 0 converts 1 Rifle ammo into...?? Some clarity would be appreciated!
So when you walk over an unused ammo pack on the ground, and you do not have full ammo, it will convert it into the amount of sniper ammo listed in the table above, dependent on level.
It's probably too late to explain this, but just in case anyone else has the same question...
The way it works is that at rank 0 it converts 1 Rifle or Pistol Ammo Pack (the kind you get as drops from mobs and storage) into 1 single round of Sniper Ammo. It is not converting one single round of Rifle/Pistol ammo into a round of Sniper ammo.
Therefore, at rank 3 it converts one Rifle/Pistol Ammo Pack into 5 rounds of Sniper ammo. That is why ranking up this particular mod is helpful, but you may not find it necessary to rank it up all of the way.
apollodorus 20 minutes 2 times
Same here (but just one)
I Found it on Mercury - Apolldorus @ 30 mins
Elara 35 min