Colin Furze has made a flamethrower rig to mimic the Marvel Comics character Pyro. They are wrist mounted flame throwers. Sort of like Spiderman but he throws fire rather than webs. From the video, Colin seems a bit eccentric, but his enthusiasm and passion is remarkable. Oh and he made wrist mounted flamethrowers in his garage workshop. Now these are Fire Arms.
Warning: we do not recommend you try this at home. If you do, check your local and state laws regarding flamethrowers.
Here is a montage of how he made them.
And here is a video of the flamethrowers in action.