Blacktown detectives investigating drug supply in the Doonside area stopped a vehicle on Brussels Crescent, Rooty Hill, about 5.20pm on Tuesday.

They alleged a search of the 42-year-old male driver, found two grams of methyl-amphetamine, otherwise known as the drug 'ice'.

The man, and his 35-year-old female passenger, were arrested.

The man was charged with a range of offences related to the commercial supply of illegal drugs. He was bail refused to re-appear at Blacktown Local Court on March 30.

The woman was charged with supplying a prohibited drug and was released on conditional bail to appear at Blacktown Court on March 8.

At the same time as police stopped the car, officers executed a search warrant in Tivoli Place, Doonside.

A 26-year-old man and a 47-year-old woman were arrested at the home.

Police allege they uncovered stolen property and drug paraphernalia during the raid.

The 26-year-old man was charged with supplying an indictable quantity of a prohibited drug.

He was granted conditional bail, to appear at Penrith Local Court on March 30.

The 47-year-old woman was charged with suppling a prohibited drug and owner/occupier knowingly allow use as drug premises.

She was granted bail to appear at Mt Druitt Local Court on March 30.

About 8.30pm yesterday, police stopped a vehicle on Avoca Drive, Canley Vale.

Police alleged that while searching the 31-year-old male driver and his car, they found 13.5 grams of ice cash, 10 mobile phones and an extendable baton.

Police then searched his home in Canley Vale, where they alleged they found 800 grams of ice, a loaded .22-calibre semi-automatic pistol, a loaded .22-calibre ‘keyring’ gun, and equipment relating to drug supply.

The 31-year-old man was charged with:

- Supply prohibited drugs on an ongoing basis

- Two counts of possess or use a prohibited weapon without permit

- Possess unauthorised pistol

- Possess unauthorised prohibited firearm

- Possess ammunition without holding licence/permit/authority

- Supply indictable quantity of a prohibited drug

- Two counts of goods in personal custody suspected being stolen

- Supply commercial quantity of a prohibited drug

Police will allege the 31-year-old man supplied drugs to be sold from the home in Tivoli Place, Doonside.

He was refused bail and will re-appear in Bankstown Local Court on March 30.