Taskforce Raven has charged three men and seized two homemade firearms during raids on homes in the Launceston suburbs of Waverley and St Leonards on Tuesday.
A 25-year-old St Leonards man and a 22-year-old Waverley man were arrested during a search at a Waverley home, where police allegedly found ammunition and illicit substances.
Both men were charged with multiple offences, including firearms and family violence charges.
A 29-year-old Waverley man was also arrested on a warrant for failing to appear in court.
A second search, at a St Leonards home, uncovered a loaded homemade pistol, a homemade double-barrel shotgun, ammunition, cannabis, drug paraphernalia and power tools believed to have been stolen.
The 25-year-old was charged over the second haul and remanded to appear in court on Wednesday.
The 22-year-old was also remanded to appear in court, while the 29-year-old is due to face court in August.