The arc rifle is an energy weapon built by the Adeptus Mechanicus and usually carried by Skitarii Rangers. Instead of bullets or las-bolts, it throws arcs of crackling electricity that fry machinery and flesh alike.
What the arc rifle actually is
It’s a two-handed rifle belonging to the wider family of Mechanicus arc weapons, the same tech family as the arc pistol, arc maul, and arc lance. Skitarii Rangers are its most common users.
Arc weapons are prized for hitting hard against targets that don’t care about ordinary gunfire. That makes the arc rifle a natural fit for a faction that treats electricity as just another tool in the toolbox.
Branx pattern
The Branx pattern comes from Branx Minor and trades bulk for mobility. It drops the heavy priming packs and cabling you’d normally see on an arc weapon and uses a replaceable activator coil instead.
That swap costs you ammo longevity and stability, but the Mechanicus considers it a fair price. The Branx Mk IV pushes the idea further with a replaceable charging engine, cutting ammo capacity for manoeuvrability that Skitarii Alpha Primus troops value highly.
- Origin: Branx Minor
- Replaceable activator coil instead of priming packs and cabling
- Less ammo endurance, more mobility
- Branx Mk IV swaps the backpack feed for a charging engine
Mezoa pattern
The Mezoa pattern is produced on Mezoa. Sources describe it as a distinct variant of the arc rifle, though details beyond its place of manufacture are thin.
How it connects to the wider lore
The arc rifle sits inside the broader arc weapon family used across the Adeptus Mechanicus, which also includes the heavy arc rifle as a heavier cousin. It’s one of several two-limbed weapons in the Skitarii arsenal, alongside galvanic rifles and plasma calivers.
Its presence in video games like Darktide and Rogue Trader has made it a familiar sight to fans who’ve never picked up a Skitarii miniature.
| Pattern | Origin | Notable trait |
|---|---|---|
| Branx | Branx Minor | Replaceable activator coil, more mobile |
| Branx Mk IV | Branx Minor | Charging engine, prized by Alpha Primus |
| Mezoa | Mezoa | Produced on Mezoa |
Key facts
- The arc rifle is an Adeptus Mechanicus arc weapon, typically carried by Skitarii Rangers.
- It fires arcs of electricity rather than solid rounds or las-bolts.
- The Branx pattern from Branx Minor trades ammo capacity for mobility with a replaceable activator coil.
- The Branx Mk IV uses a charging engine and is favoured by Skitarii Alpha Primus.
- The Mezoa pattern is produced on Mezoa.
- The heavy arc rifle is a separate, heavier weapon in the same family.
FAQ
Who uses the arc rifle in Warhammer 40k?
Skitarii Rangers are the most common wielders. It’s an Adeptus Mechanicus arc weapon, so you’ll see it across Mechanicus forces rather than in other Imperial armies.
What’s the difference between the Branx and Mezoa patterns?
The Branx pattern comes from Branx Minor and uses a replaceable activator coil for better mobility. The Mezoa pattern is made on Mezoa, but sources give fewer details about how it differs.
Is the arc rifle the same as the heavy arc rifle?
No. They’re related arc weapons, but the heavy arc rifle is a separate, heavier weapon in the same family.