He was stood down from the AFP in March,2019,pending a professional standards investigation before resigning five months later in August.
The court heard Jabbour took his AFP-issued pistol,a 9mm Glock,on October 2,2018,and then used it while on recreational leave. The weapon is a prohibited firearm unless it is being used for an official police purpose.
According to the prosecution,he took the pistol to a gun range with relatives on October 2 and a farm,where hunting took place,on October 3. Details of the farm were suppressed,but the court heard the property was used for sniper training.
Other AFP officers were present on the day and helped out with the activities and specialist sniper rifles were fired on the day,including by one of Mr Jabbour's relatives.
Barrister David Jordan,representing the Commonwealth,told the court at least one of Jabbour's relatives used his AFP-issued pistol on October 3.
He also said Jabbour"gave gifts of beer and store gift cards of only relatively small value"to officers who helped arrange the day.
"Kangaroos were shot that day... the 9mm was fired,this was all done using Mr Jabbour's pistol in circumstances where he was on recreational leave at the time and there was no functional duty to perform,"Mr Jordan said.