The combi-bolter is two bolters bolted together into a single weapon. It’s one of the oldest designs in the Space Marine arsenal, and it’s still carried by Terminators, Chaos Marines, and anyone lucky enough to own a working relic.
What the combi-bolter actually is
A combi-bolter is exactly what it sounds like: two bolters mounted side by side and wired to fire as one. The result is double the shots of a standard boltgun, at the cost of being heavy, ammo-hungry, and awkward to reload.
It’s part of a wider family called combi-weapons, where a boltgun is paired with something else. The combi-bolter is the simplest version, because both halves are the same gun.
Why it matters
The combi-bolter predates the Horus Heresy. It was standard issue for Space Marine Terminators back when the Legions were one unified force, and it’s been in service ever since.
The Imperium stopped making them. The Storm Bolter replaced it as the modern Terminator weapon, so every combi-bolter still in the field is either an ancient relic or a Chaos-forged copy. That’s why they turn up most often in the hands of Chaos Space Marines and veteran loyalist units.
Combi-bolter patterns and variants
Several named patterns show up across the lore. Phobos and Tigrus patterns are the most commonly cited, and they appear on both Heresy-era and modern miniatures.
The combi-bolter also sits at the head of a bigger family. Swap the second bolter for a flamer, meltagun, plasma gun, or grenade launcher and you get a combi-flamer, combi-melta, combi-plasma, and so on. Same idea, different payload.
Who carries it
Loyalist Terminators, Chaos Terminators, and characters who’ve held onto a relic pattern are the usual suspects. Deathwatch Kill Teams sometimes field the Infernus Heavy Bolter, a heavy combi-flamer built on the same principle.
House Goliath gangs in Necromunda also use combi-weapons, which shows how far the design has spread beyond the Astartes.
Key facts
- A combi-bolter is two boltguns mounted together and fired as one weapon.
- It predates the Horus Heresy and was once standard issue for Space Marine Terminators.
- The Imperium stopped producing them, replacing them with the Storm Bolter.
- Most surviving combi-bolters are ancient relics or Chaos-built copies.
- It’s the simplest member of the combi-weapon family, which also includes combi-flamers, combi-meltas, and combi-plasmas.
FAQ
Is the combi-bolter the same as a storm bolter?
No. The storm bolter is the newer, more compact successor that replaced it. A combi-bolter is literally two bolters joined together, which makes it bulkier and harder to maintain.
Can loyalist Space Marines still use combi-bolters?
Yes, but usually only as relics. Since the Imperium no longer produces them, any combi-bolter in loyalist hands is an ancient weapon passed down through a Chapter.
What’s the difference between a combi-bolter and a combi-weapon?
A combi-bolter is one specific type of combi-weapon, where both halves are bolters. Other combi-weapons pair a bolter with a flamer, melta, plasma gun, or similar.