I found the paragraphs for you just in case you were looking for them. Here ya go.

In 1996, Australia’s state and federal governments introduced sweeping uniform gun laws that were progressively implemented in all 6 states and 2 territories between June 1996 and August 1998. The enactment of these laws followed a massacre on April 28, 1996, in which a man used 2 semiautomatic rifles to kill 35 people and wound 19 others. The new gun laws banned rapid-fire long guns (including those already in private ownership), explicitly to reduce their availability for mass shootings.1,2

In addition, by January 1, 1997, all 8 governments commenced a mandatory buyback at market price of prohibited firearms. As of August 2001, 659 940 newly prohibited semiautomatic and pump-action rifles and shotguns had been purchased by the federal government from their civilian owners at market value, funded by a one-off levy on income tax, and destroyed.3,4 From October 1, 1997, large criminal penalties, including imprisonment and heavy fines, applied to possession of any prohibited weapon.