Ghetto construction

[jflan17]

I am not really sure what to call this but it should be able to shoot tiny-small items in addition to grenades(grenades are at risk of going off inside of the thing).

To build
2 hollow pipe frames + fire extinguisher + air tank + cable coil + fork + igniter
Attach the hollow pipe frames together then add the fire extuinguisher, air tank, cable coil, fork and lastly igniter.

Sounds similar to the Rock-It Launcher from Fallout.