Police have seized two 3D-printed submachine guns, nine stolen cars and explosives during a crackdown on prohibited firearms in NSW.
In May last year, detectives from NSW Police and the Australian Federal Police began investigating the manufacture and supply of prohibited firearms across the state.
Officers from the anti-gangs and criminal groups squads seized two 3D-printed submachine guns, three firearms, and 28 sticks of explosives earlier this year.
In dawn raids in Sydney on Tuesday, officers searched homes in Georges Hall and Brighton Le-Sands and businesses in Bankstown, with a 38-year-old man arrested.
A 21-year-old man was also arrested during a raid on a home at Woy Woy on the Central Coast on Wednesday and is expected to be charged.
Police seized another firearm, ammunition, luxury watches, mobile phones, handcuffs, $20,000 in cash, and nine allegedly stolen vehicles.
The 38-year-old man, from Georges Hall, was taken to Bankstown Police Station and charged with 37 offences. He was refused bail to appear at Parramatta Local Court on Wednesday.