The lascannon is the Imperium’s go-to anti-tank laser, a scaled-up lasgun built to punch through vehicle armour and drop heavily armoured troops in one shot. Its slow rate of fire makes it a poor choice against infantry, but commanders prize it for sheer reliability.
What the lascannon does
A lascannon is a laser weapon scaled up from the humble lasgun. Where a Guardsman can carry a lasgun all day, a lascannon is far too heavy for a normal human to shoulder, so it’s usually mounted on a vehicle or served by a crew. Space Marines can carry and fire one thanks to their gene-enhanced strength and power armour, but for everyone else it’s a fixed or tripod-mounted weapon.
Its beam is powerful enough to pierce most vehicle armour and kill heavily armoured troops. The trade-off is a slow recharge and fire rate, so it’s not an anti-personnel weapon. In the Imperial laser family it sits at the top, with the lasgun below it and laspistols beneath that. It’s the answer to the question every Guard commander eventually asks: what do I point at a tank?
- Laser technology shared with the lasgun, but much larger and heavier.
- Pierces most vehicle armour and kills heavily armoured troops in one shot.
- Slow recharge and low rate of fire, so it’s poor against massed infantry.
- Usually vehicle-mounted or crew-served; Space Marines can shoulder-fire one.
- Shows up well beyond the Imperium, with Chaos warbands fielding their own versions.
Why commanders trust it
Reliability is the lascannon’s real selling point. The technology was perfected rather than scavenged from ancient STC fragments, so it doesn’t jam or fail when you need it most. Many Imperial commanders rate that dependability above raw stopping power, because a weapon that jams at the wrong moment is worse than useless.
That dependability makes it a natural tank weapon. On tanks, lascannons are often twin-linked to improve their yield, and you’ll find them hull-mounted or in sponsons across the Imperium’s armoured regiments.
- Technology is perfected rather than salvaged, so failures are rare.
- Twin-linking is the usual way to squeeze more punch out of the weapon.
- Common mounts include hull positions and sponsons on Imperial armour.
Power and ammunition
A lascannon’s removable charge pack is good for a single shot. If the weapon isn’t hooked up to an external power supply, a crew member has to swap packs between shots, which is part of why the fire rate is so slow.
Vehicle-mounted versions usually draw from the tank’s own power plant, avoiding that bottleneck entirely.
- Each removable charge pack holds only one shot.
- Crew-served versions need someone swapping packs between shots.
- External power supplies or vehicle power plants remove the reload delay.
Notable patterns and variants
The lascannon comes in many patterns, each tweaked for a specific role or platform. Some are standard-issue, others are relics of the Great Crusade, and some are Chaos-corrupted versions. Space Marines use the MK VII Mars Pattern, while the Godhammer Pattern arms the Land Raider. The Imperial Guard’s Hell Hammer Pattern is a crew-served version.
Several patterns are tied to specific chassis. The Stormbringer rides on the Predator Annihilator, the Voss pattern on the Valkyrie, and the Hades lascannon on Chaos machines like the Defiler. The Sol Militaris was issued to the Legiones Astartes during the Great Crusade and Horus Heresy, tying the weapon back to the Imperium’s earliest days.
Non-standard types include the Las-Ripper on the Astraeus super-heavy tank, the Las-Talon on the Stormhawk Interceptor and Repulsor, the Magna Lascannon on Acastus Knight Porphyrions, and the Arachnus heavy lascannon on Deredeo Dreadnoughts.
| Pattern | Common user |
|---|---|
| MK VII Mars | Space Marines |
| Godhammer | Land Raider |
| Stormbringer | Predator Annihilator |
| Hell Hammer | Imperial Guard (crew-served) |
| Sol Militaris | Legiones Astartes (Great Crusade/Horus Heresy) |
| Voss | Valkyrie |
| Hades | Chaos (e.g. Defiler) |
| Las-Ripper | Astraeus super-heavy tank |
| Las-Talon | Stormhawk Interceptor, Repulsor |
| Magna Lascannon | Acastus Knight Porphyrion |
| Arachnus heavy lascannon | Deredeo Dreadnought |
Key facts
- The lascannon is a heavy laser weapon built for anti-tank and anti-heavy-infantry work.
- Its slow recharge and fire rate make it a poor anti-personnel choice.
- It’s usually vehicle-mounted or crew-served, though Space Marines can shoulder-fire it.
- Charge packs hold one shot each, so crew-served versions need reloading or external power.
- It’s prized for reliability, since the tech is perfected rather than scavenged from STCs.
- Common patterns include MK VII Mars, Godhammer, Stormbringer, Hell Hammer, and Voss.
FAQ
Is a lascannon the same as a lasgun?
No. They share laser technology, but a lascannon is much larger and heavier. A lasgun is a standard infantry rifle, while a lascannon is a heavy anti-tank weapon that’s usually mounted or crew-served.
Can a Space Marine carry a lascannon?
Yes. Their gene-enhanced strength and power armour let them shoulder-fire a lascannon, something a normal human can’t manage.
Why is the lascannon so reliable?
Its technology was perfected rather than scavenged from ancient STC fragments, so it doesn’t suffer the failures common to other Imperial weapons. Commanders value that dependability over flashier stats.
Why is the lascannon a poor choice against infantry?
It has a slow recharge and low rate of fire. Those traits make it excellent against armour but inefficient against massed troops.