The bill will make it a criminal offence to breach a firearms prohibition order, and also a crime to knowingly supply firearms to those that have a firearms prohibition order placed on them. The bill enables a court to make a firearms prohibition order for any person 18 years of age or older who has been convicted of a serious criminal offence. Qualifying offences for a firearms prohibition order are serious firearms offences, serious violent offences, participation in organised criminal groups, or terrorism-related offences. 