The OPP have charged 11 individuals and charged them with 58 offences after a probe was begun in Montreal and search warrants executed by Police across the province simultaneously.
Items seized in the effort included 10 3d printed firearms, 16 handguns, 43 partially manufactured firearms, 46 unrestricted firearms, 123 magazines including several prohibited and 10 3D printers.
There were also illicit drugs seized including fentanyl pill and just under $34,000 in cash.
The charged include a 37-year-old male of Central Huron and a 37-year-old male of Listowel.
They have been charged with weapons-possession and manufacturing and storage charges.