Slayer cannon

Everytime I watch youtubers, silentc0re and fangzorrs, who do slayer tasks use a cannon. I know the dwarf multicannon degrades after 20 minutes, but the one they use doesn't degrade. Does anyone know what cannon this is? What are the Reqs?

 

I do slayer tasks with cannons, and mine hardly ever degrades. If it comes to that message, I just set it up again.

 

Do the dwarf cannon quest, all you do is pick it up and replace it, and it wont degrade. just do it every 10 minutes or so.

 

So I can keep it forever? Is there a range req?

 

It's actually a trick they use and so do I...

After it gives you a red message saying it's about to degrade

All you do is simply pick the cannon and re-set it, this way it never regrades.

 

Thanks, what are the requirements?

 

You just need to do Dwarf Cannon, a really easy quest. No ranged requirement.

 

They don't have a "special" dwarf cannon. You just simply pick it up and re-place it.