The government is expanding powers for the police and courts in hopes of keeping firearms from gangs and high-risk offenders.

From Sunday, police have been given new search powers to check compliance with Firearms Prohibition Orders (FPOs).

Courts will also be given expanded criteria to apply FPOs, and a process has been set up for orders to be modified or removed.

Justice Minister Mark Mitchell said the move demonstrated this government was taking law and order seriously.

"The changes in the Act mean courts will be able to issue FPOs to any gang member or associate convicted of a significant offence, and police will have practical tools to ensure people with FPOs are complying with them."

Associate Justice Minister Nicole McKee said the changes were not meant as an extra punishment for offenders.

"It is about monitoring compliance with the order that has already been placed upon them, and of course, the ultimate outcome is about making our communities safer.

"This is part of our commitment to reduce violent crime, restore law and order, and keep communities safe."

The court establishes FPOs when offenders have committed serious violent offences.

The orders are in force for 10 years and prohibit offenders from holding a firearms licence, and from being around or accessing firearms.

Breaching FPO conditions is a criminal offence that can result in up to seven years imprisonment.