Cons for repairing this machine.
1. manufacture long gone
2. parent company of manufacture gone
3. machine in unknown condition
3. missing gun $150
4. missing reg $60
5. you own a better quality machine already
I think the money spent just to take a chance and see if the machine will work is too much. A free welder would be one that is complete and in working condition. Now if greenbuggy is offering service free of charge,go for it.