"Muggy" Upgrade: Parts Production is a holotape in the Fallout: New Vegas add-on Old World Blues.
It is a holotape containing back-up scripts for Muggy's extra function. When installed, it enables Muggy to provide 50 small energy cells, 50 microfusion cells, and 5 scrap electronics once per day.
Found on 010011110110111001100101 in the Securitron de-construction plant.
This holotape contains an upgrade file for the Sink robotic assistant: "Muggy".