The Comanchero bikie had surgery last night after he was shot four times in the stomach at Rhodes early yesterday morning.
The 28-year-old was the fourth member of the Comancheros to be shot in Sydney this week.
Three others were shot outside a wedding reception at Canley Vale soon after midnight on Monday morning.
One of them, 23-year-old Faalau Pisu, died in hospital.
Police believe the shootings are part of an internal conflict within the Comancheros.
Senior police sources have confirmed the latest victim is a suspect in Monday's shooting, and they believe it was a revenge attack.
Detectives are waiting to question him, as he remains under police guard in hospital.
In yesterday's attack the victim was shot in a car park on Walker Street in Rhodes about 5:00am (AEDT).
He then staggered a few hundred metres along Rider Boulevard before paramedics arrived.
Police Minister Mike Gallacher was briefed by senior police and the Crime Commission yesterday.
He says specialist officers have been sent out in force to try to stop the conflict escalating.
"There is a significant deployment of resources into certain areas of Sydney, particularly targeting individuals or known individuals to ensure that this matter is brought it to an end as quickly as possible," Mr Gallacher said.
"The police do have a very good understanding of what is occurring here and working with the Crime Commission and the ability that the Crime Commission has in terms of its coercive powers to obtain information from people does give police that edge in relation to trying to bring this issue to an end."