While printing the Fully Posable Raider Titanic Robot I thought I want another weapon so i checked the wiki what this Titan can carry. I liked the Volcano Cannon so I modelled one really quick, it fits on the weapon housing from the Laser Blaster. It´s a bit too wide but I think it´s okay. Feel free to remix it and please post pictures.
Print it with 0.1 layer height to get the fine details right.
I created another version after some picture of a Iron Warrior Version of it I found online.
It fits almost perfectly on the original Weapon housing (scale it down 1 or 2 percent for a bit of room).
Pictures will follow soon.