Three other men, Jason Jeremiah Kaimoana, 34, Quentin Kane Kaimoana, 24, Joshua Jermaine Robin, 19, were found not guilty of being part of an organised criminal group.
The same charge had earlier been dismissed against Dion Marley Campbell, 33, because of lack of evidence.
The Crown says Judas Rerere, with links to Black Power, was shot by an unknown person when the car he was a passenger in was driven to the Mongrel Mob headquarters in Kaimoana Road, Wairoa, in the early hours of October 26, 2010.
The shooting happened several days after the Mongrel Mob went on "red alert" in expectation of possible retaliation following the theft of a Black Power car.
The thief drove to the gang pad, pursued by police.
His actions were "a provocative act" not appreciated by the Mongrel Mob, who believed the incident could lead to Black Power retaliation.
The accused took, or removed, guns from the pad, or directed the gang members in their actions.
Amit Martik, counsel for Riki Raroa, told the jury some texts showed Raroa making concerted efforts to resolve issues after the shooting. There was no evidence of any other tension between the gangs, Mr Martik said.
The Crown said the shot that struck Rarere was fired from within the gang pad.
But what was not known was who the shooter was, what type of gun it was and where the shot was fired from.
It was a reasonable possibility that Rarere was shot by "friendly fire" and not from the Mongrel Mob pad, said Mr Martik.
Philip Jensen, counsel for Cleveland Raroa, said the text messages were open to interpretation.
The Crown could not say who pulled the trigger.
Did the shot come from the Mongrel Mob building?
The charge of being part of an organised criminal gang required a person to be more than a gang member.
Nicola Wright, counsel for Jason Kaimoana, said his text messages made no reference to words such as "rakau" or "things" - said by the Crown to be code words for firearms.
He had sent texts about mutton, also alleged to have been a codeword for weapon.
But there had also been text references to "boil-up, cabbage, stew, hangi and lamb tails" while "mutton" was on a shopping list found by police.
John Mathieson, counsel for Quentin Kane Kaimoana, said the Crown had fallen short of proving his client had taken part in an organised criminal group by taking or removing firearms from the pad.
Legally, Kaimoana was not participating in the gang and was not a dedicated member.
There was no evidence of him being at the pad after the shooting nor could the jury be sure that Kaimoana knew of the presence of firearms or any gang objective at the pad.
