Police allegedly located a quantity of drugs, a homemade explosive, and a loaded 3D-printed firearm after executing a warrant in Cranbourne on Wednesday 20 March.
Police attended an address in James Cook Drive at about 9am as part of an ongoing investigation.
A 54-year-old man and a 43-year-old man, both from Cranbourne, were arrested and officers searched the property.
During the search police allegedly seized a traffickable quantity of cannabis, a traffickable quantity of GHB, a loaded 3D-printed firearm, shotgun ammunition, and a homemade explosive device located in the freezer.
A 54-year-old and a 43-year-old Cranbourne man were released pending further inquiries.
Anyone with information about this incident is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential crime report to www.crimestoppersvic.com.au