Quick answer: The Mammoth LMG is the free Season 5 light machine gun in Black Ops 7 and Warzone, and it is event-locked — you can only get it by grinding Fuel Cans through the Machine of War event, which ends on August 13, 2026. The Mammoth itself costs 25 Fuel Cans to claim, but it sits at the end of its reward tier, so you need to bank roughly 200 Fuel Cans total to work through the earlier rewards and reach it. Fuel Cans drop from eliminations in Multiplayer, Zombies, Endgame, and Warzone, from loot caches in Warzone, and from completing Ranked Play matches. It's the most-complained-about gun in the game right now, but Treyarch has not nerfed it in any patch through the July 29 update — if a nerf comes, expect it with Season 5 Reloaded. If the event ends before you finish, the gun is gone until (or unless) it returns.
If you only take one thing from this guide: the clock is the real boss. The Mammoth is strong, but the bigger story is that it's a limited-time unlock and the window closes on August 13. Below is exactly what the gun is, how to unlock it, the fastest Fuel Can farm per mode, why the community wants it gone, whether a nerf is actually coming, and how to fight it if you're on the receiving end.
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What is the Mammoth LMG in Black Ops 7?
The Mammoth is a light machine gun added in Black Ops 7 Season 5 (live since July 23, 2026). Treyarch's own Season 05 patch notes describe it in one line that tells you everything about its identity:
"The Mammoth LMG hits hard and stays on target even through sustained fire." — Call of Duty: Black Ops 7 Season 05 Patch Notes (Treyarch, July 2026)
That "stays on target through sustained fire" part is the whole problem. LMGs normally trade recoil control and mobility for their big magazines — you're supposed to accept some kick and slow handling in exchange for the ammo. The Mammoth flattens that trade-off: it hits hard, holds a huge belt, and stays controllable deep into a spray, which is why it's dominating lobbies in a way most LMGs never do.
It also crosses over. Like other Season 5 weapons, once you unlock the Mammoth in Black Ops 7 it's available in Warzone as well, so the same grind pays off in both games. It's a genuinely different weapon from the two other Season 5 guns: the FG42 and Gremlin live in the Battle Pass, while the Mammoth is the event-only reward — you cannot buy it or find it in a Battle Pass tier. (For the full Season 5 weapon rundown, see our Season 5 new weapons unlock guide.)
How do you unlock the Mammoth LMG?
There is exactly one path: the Machine of War event. It's a collection event, not a challenge list — instead of ticking off "get 3 kills with X," you earn a currency called Fuel Cans just by playing, then spend them on a track of rewards. The Mammoth is the headline reward on that track.
Here's the important detail most players miss: the Mammoth costs 25 Fuel Cans to redeem, but it's the last reward in its tier. You can't skip straight to it. You have to unlock the rewards ahead of it first, which means banking roughly 200 Fuel Cans in total across the event before the LMG is available to claim.
| Milestone | What it costs | Notes |
|---|---|---|
| First event rewards (camos, reticle, etc.) | Low Fuel Can tiers | Puffed Up & Soul Eater Universal Camos, "Piston" Reticle, "Mechanic Preparation" loading screen, and more |
| Mammoth LMG | 25 Fuel Cans to claim | But it's the final reward in its tier |
| Total to reach the Mammoth | ~200 Fuel Cans | You must clear the earlier rewards first |
| Event ends | August 13, 2026 | Miss it and the Mammoth is gone from the event |
Two hard rules to internalize: it's 100% free (no COD Points, no Battle Pass purchase), and it's time-gated. As of this writing you have until August 13 — count your days, not your kills. If your Fuel Cans have stopped counting toward the track, that's a known event bug with a fix; see Machine of War Fuel Cans not tracking before you waste a session. For the complete reward-by-reward breakdown, our Machine of War event guide lists everything on the track.
What's the fastest way to farm Fuel Cans?
Fuel Cans come from eliminations in every mode, plus Warzone loot caches and Ranked Play match completions. That means the fastest farm is whatever mode gets you the most eliminations per minute — not the mode you enjoy most. Here's how the options stack up:
| Farm method | Why it's fast | Best for |
|---|---|---|
| Zombies (high rounds) | Enemies are endless and die in bulk — the single highest raw elimination rate in the game | Anyone who wants to bank cans quickly and semi-AFK-safe with a team |
| Multiplayer high-kill modes (Nuketown-style small maps, Kill Confirmed, Domination) | Constant respawns = constant kills; objective modes keep the action centralized | Players who want XP + Fuel Cans + camo progress at once |
| Warzone (loot caches + kills) | Double dip: eliminations and opening caches both drop cans | BR players; also lets you feed camo/leveling goals |
| Ranked Play (match completion) | Cans for finishing matches regardless of how the game goes | Players already grinding SR |
Three tips that actually move the needle:
- Chase eliminations, not wins. A 3-minute Zombies stretch or a chaotic small-map Team Deathmatch bank more cans than a slow, careful BR placement game.
- Stack it with goals you already have. Every match you play to farm cans is also weapon XP and account XP. If you're grinding levels or camos anyway, you're farming cans for free.
- Don't leave it to the last night. ~200 cans across seven reward steps is a real grind. Spread it over the days you have left rather than trying to no-life it on August 12.
If your schedule simply won't allow a ~200-can grind before the 13th, that's exactly the gap a boost fills — a service can bank the Fuel Cans on your account and you keep the weapon and all the XP earned along the way (more on that below).
Why is everyone saying the Mammoth is overpowered?
Scroll r/blackops7 right now and it's wall-to-wall Mammoth: threads titled things like "The Mammoth has ruined the game" and sarcastic "the Mammoth is very balanced and does not need a nerf /s" posts are near the top daily. The complaints cluster around a few real strengths:
- It stays controllable through sustained fire. Treyarch literally advertised this. In practice it means the Mammoth wins extended gunfights that most LMGs lose to recoil.
- It hits hard with a huge magazine. High damage plus LMG ammo capacity means it can hold down lanes and shred multiple enemies without reloading.
- It's a monster in Zombies. With Pack-a-Punch and the class's crit scaling, the Mammoth chews through high rounds and even boss fights, which is why the Zombies community has crowned it the new go-to LMG.
The blunt version: it's a free gun that outperforms weapons players had to grind or pay for, and it's everywhere because the whole player base is chasing the same limited-time unlock at once. That combination — free, strong, and temporarily unavoidable — is exactly what makes a weapon feel oppressive even when the raw numbers aren't the worst in the game's history.
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Is the Mammoth LMG getting nerfed?
As of the latest patch — the July 29, 2026 Season 5 update — Treyarch has not nerfed the Mammoth LMG. There is no weapon damage or recoil change to the Mammoth in the official Black Ops 7 patch notes. So if you unlock it today, you're getting it at full strength.
That said, a nerf is a reasonable bet, for two reasons:
- Treyarch has a clear pattern of reining in dominant guns. This season alone the AN-94 was heavily nerfed; earlier in Black Ops 7's life the MK.78 LMG had its damage range cut for being overpowered, and the Swordfish A1 got a formal damage nerf. When one weapon takes over the meta, a balance pass usually follows.
- The community pressure is loud and constant, and the natural place for a weapon-balance update is the next major content drop — Season 5 Reloaded, expected in late August / early September 2026 (the same update that brings the Rex Infernus Zombies map).
So the honest answer: no nerf yet, one is plausible with Season 5 Reloaded, and nothing is confirmed. Which is actually an argument to unlock it now — get it while it's free and strong, and you keep the gun even if Treyarch tunes it down later. A tuned-down Mammoth is still a gun you own; a Mammoth you never unlocked before August 13 is a gun you don't.
How do you counter the Mammoth in Multiplayer and Warzone?
You can't out-DPS a good Mammoth user in a straight lane duel, so don't try. Beat it on the things LMGs are still bad at — movement and engagement range:
- Break the sightline. LMGs punish players who hold still in the open. Use cover, corners, and verticality so the Mammoth never gets the long, sustained line of fire it's built for.
- Close the gap or widen it. In tight rooms, an SMG's mobility and ADS speed beats the Mammoth's slower handling. At long range, a marksman/sniper picks it off before it can pressure you.
- Play the flank, not the head-on. Objective modes funnel Mammoth users into predictable lanes — rotate wide and hit them from the side where their slower turn speed hurts.
- Bait the reload. Even a huge belt runs dry eventually. Force sustained fire, take cover, and punish the reload window.
None of this makes the Mammoth weak — it just stops handing it the fights it's designed to win.
Grab it (and max it) before the window closes
The Mammoth is free, but the Fuel Can grind and the August 13 deadline are real. If you want the gun in your loadout without spending the next week farming, or you want it fully leveled with attachments unlocked the moment you get it, that's what our CoD services are for:
Get the Mammoth and level it before the event ends:
- CoD Bot Lobbies — easy lobbies to farm Fuel Cans and eliminations fast, so you actually hit ~200 cans before the 13th.
- CoD Account & Weapon Leveling — skip the grind and get the Mammoth (and your other guns) maxed out with attachments unlocked, done by pro players.
- CoD Camo Unlocks (BO7) — chasing Gold, Diamond, or mastery camos on the Mammoth? Get them unlocked without the challenge slog.
- All Call of Duty services — bot lobbies, leveling, camos, ranked, and Zombies in one place.
Everything is handled by real players, and you keep the weapon XP and Battle Pass XP earned along the way. If you're also grinding toward Prestige, pairing the farm with a level push is efficient — see how long it takes to reach Level 1000.
FAQ
How do you unlock the Mammoth LMG in Black Ops 7? You unlock it through the Machine of War event by collecting Fuel Cans. The Mammoth costs 25 Fuel Cans to redeem, but it's the final reward in its tier, so you need to bank roughly 200 Fuel Cans total to clear the earlier rewards and reach it. It's free — no COD Points or Battle Pass purchase required.
When does the Machine of War event end? The event ends on August 13, 2026. After that, the Mammoth is no longer available through the event, so you need to finish the Fuel Can grind before then.
Can you still get the Mammoth after the event ends? Not through Machine of War. Event weapons sometimes return later through the Armory or a future event, but nothing is confirmed — treat August 13 as your hard deadline.
Is the Mammoth LMG getting nerfed? Not yet. There is no Mammoth nerf in any Black Ops 7 patch through the July 29, 2026 update. Treyarch has nerfed other dominant guns this season (the AN-94) and in the past (MK.78, Swordfish A1), so a balance pass is plausible — most likely with Season 5 Reloaded — but nothing is official.
Does the Mammoth carry over to Warzone? Yes. Once you unlock it in Black Ops 7 it's available in Warzone too, and Fuel Cans can be earned in Warzone (eliminations and loot caches) as part of the same event.
What's the fastest way to farm Fuel Cans? Play the mode with the highest elimination rate — high-round Zombies and small-map high-kill Multiplayer modes bank cans fastest, while Warzone lets you double-dip on kills and loot caches and Ranked Play pays out for finishing matches. Chase eliminations, not wins.
Why do my Fuel Cans say they're not tracking? That's a known event bug. Check our Machine of War Fuel Cans not tracking fix — it's usually resolved by re-checking the event tab, restarting, or a mode-specific workaround rather than lost progress.
