A meltagun is the standard-issue melta weapon of the Imperium, a short-range anti-armour gun that turns tanks, Terminators, and bulkheads into molten slag. It’s the go-to choice for infantry who need to kill something heavily armoured before it kills them.
What a meltagun actually does
Meltaguns work by sub-molecular thermal agitation. In plain terms, they heat the target so violently that it cooks, melts, or vaporises outright. Almost any material can be reduced to slag, which is why they’re feared by tank crews and infantry alike.
They’re at their best up close. Get a meltagun within its effective range and it’ll punch through armour that would shrug off lasgun or bolter fire. At longer distances the blast loses focus and the damage drops off sharply.
Firing one is almost silent. The beam heats the air as it passes, producing a distinctive hiss that turns into a roaring blast when it hits living flesh and body moisture flashes to steam.
- Anti-armour role: tank hunting, close assault, breaching
- Effective range: short, damage falls off quickly with distance
- Ammunition: refined chemicals in pressurised melta canisters, shared with inferno pistols and multi-meltas
- Nicknames: fusion guns, melters, vape guns, cookers
Who carries them
Meltaguns are an Imperial weapon first and foremost. You’ll see them with the Astra Militarum, Space Marines, the Adepta Sororitas, and the Ordo Hereticus, among others.
Infiltrating squads love them. A small team can slip behind enemy lines and torch a vehicle before it ever gets to fight, which is often worth more than the squad itself.
- Astra Militarum: special weapon squads, veteran squads, Stormtroopers
- Space Marines: tactical squads, assault squads, Sternguard
- Adepta Sororitas: Battle Sisters and Dominions
- Inquisition: Ordo Hereticus warbands and acolytes
- Notable user: Ferik Jurgen, aide to Commissar Ciaphas Cain
More than a weapon
A meltagun doubles as a battlefield engineering tool. It can cut a metre-wide hole through an abandoned extraction pipe to open a route, or flash a dozen cubic metres of ice into steam to widen a cramped tunnel.
That flexibility is why you’ll find them in boarding actions and tunnel fights as often as on open battlefields.
Patterns and variants
| Pattern | Notes |
|---|---|
| Accatran Pattern MkVIII | Used by Elysian Drop Troops |
| Mk.V Necro Pattern | Used by the Sisters of Battle |
| Primus Mk.II | Great Crusade-era Space Marine model |
| Ultima Pattern (‘Tank Killer’) | Anti-armour variant |
| Vulkan Pattern | Used by Retaliator squads in boarding assaults |
| Vulkan Assault Pattern | Carried by Demetrian Titus during the Invasion of Graia |
| Melta Carbine | Used by Tempestus Aquilons |
| Daemonbreath Meltagun | Mounted on Chaos Knights |
| Conflagration Meltagun | Specialised pattern |
Key facts
- Meltaguns are the basic melta weapon of the Imperium, used by the Astra Militarum, Space Marines, Adepta Sororitas, and Inquisition.
- They work by sub-molecular thermal agitation, cooking or vaporising the target at short range.
- They’re nearly silent to fire, producing a hiss that becomes a blast when flesh is hit.
- Ammunition is refined chemicals in pressurised canisters, shared with inferno pistols and multi-meltas.
- Meltaguns double as engineering tools for cutting through pipes, bulkheads, and ice.
- Known patterns include the Accatran MkVIII, Mk.V Necro, Primus Mk.II, Ultima, and Vulkan.
FAQ
What’s the difference between a meltagun and a multi-melta?
A meltagun is the infantry-scale version. A multi-melta is a heavier, vehicle- or platform-mounted melta weapon with more range and hitting power, and it shares the same melta canister ammunition.
Can a meltagun be used outside combat?
Yes. It’s commonly used as an engineering tool for cutting through bulkheads, pipes, and ice, which is why boarding parties and tunnel fighters value it so highly.
Why do meltaguns make a hissing sound?
The beam superheats the air as it travels, creating a hiss. When it hits living tissue, the water in the body flashes to steam, which turns the hiss into a roar.