Twenty six firearms, including a military grade machine gun, have been seized from a Belmont home following a joint investigation by the WA Police and Australian Border Force.
The investigation was triggered when a packaged carrying gun parts from Slovenia was intercepted.
Officers swooped on the property on Friday, 26 October, 2018, an allegedly located a number of weapons including four shotguns, a semi-automatic rifle and eleven handguns.
They also uncovered plans and diagrams for the manufacture of firearms, Detective Sergeant Fraser Mainland from Cannington Detectives, said there's no legitimate reason for anyone to have weapons of this type.
"Many of the firearms seized had been altered or manufactured and would have posed a significant risk to anyone that handled them."
A 23 year old man from Belmont will appear in court on 23 November, 2018 hit with a string of charges.