An Adelaide man has been arrested and 28 properties searched in a day of police action "unparalleled in recent years".
A shooting at a West Lakes house on Friday morning was the sixth incident in a recent spate of violent attacks involving rival gangs.
A shot was fired at the property about 7.30am, before a 27-year-old man was arrested at the address. He is not believed to be the shooter.
The man, who police confirmed as the victim of a 2015 shooting, remains in custody and is expected to be charged with breaching his home detention conditions.
As an investigation into the latest incident was underway, other police searched 28 properties including prison cells as part of the wider inquiry.
One person is expected to be charged with breaching a firearms prohibition order, while four others were issued with drug diversions and 11 handed cannabis expiation notices.
Two people were reported over steroids, and another in relation to hydroponic cannabis discovered by police.
Police said the day of action against outlaw motorcycle gang members and associates was "unparalleled in recent years".
Chief Superintendent Tom Osborn said the activity was just the beginning of an ongoing effort to shut down the "tit-for-tat".
"This type of violence will not be tolerated," he said.
"These are not random incidents, but each poses an unacceptable risk to the wider, law-abiding community".
Friday's shooting follows a suspicious fire early on Wednesday when a hair salon was set ablaze in the fifth incident linked to a feud over a substantial drug debt.
On Monday, five shots were fired at an Ascot Park house while a fire was deliberately lit at a gym at Marleston on August 9, and another fire started in a food truck parked at a Mile End property the day before.
The first known incident was an arson attack at a St Clair property in the early hours of August 5.
Police have previously said they believe the incidents were sparked in part by a shift in the balance of power between gangs after the recent arrest of five Hells Angels members over a 2012 murder.
The home where the food truck was burnt was linked to one of the men charged with the murder of spray painter Jason De Ieso.