Hamzy, now 31, had been told that some "BFL" boys - Alex Ali and a man known only as witness X - had used the unsavoury words to describe his partner.

The NSW Supreme Court heard this week that Hamzy allegedly shot both men in 2012 after the estranged wife of a Brothers for Life member told him that the pair had insulted his wife, Meltem Yarar.

Hamzy has pleaded not guilty to murder, wounding with intent to cause grievous bodily harm and wounding with intent to murder.

In allegedly shooting X at Greenacre on October 14, 2012, Hamzy shot and killed his friend, Yeyha Amoud, who was seated in the passenger seat of X's car. X survived.

Hamzy then allegedly asked a friend, identified only as MA, to offer blood money to Mr Amoud's family.

"He told me to go and see Yeyha's family and talk to them you know," MA told the court on Wednesday.

"And tell them it was an accident ... He said to pay blood money. I think $100,000 or something."

Hamzy is also accused of shooting Mr Ali, who was lured to a park at Yagoona, on October 8, 2012.

Mr Ali survived but suffered wounds to his femur and right buttock.

The Crown alleges that Hamzy told MA he shot Mr Ali in the thigh with a .25 calibre gun after waiting in the bushes.

However, Hamzy claims he was not the gunman.

"The case for the accused is quite simple: he wasn't there, he didn't do it," Hamzy's barrister Matthew Johnston, SC, told the court.

The court has heard that, when X was shot, he was sitting in the driver's seat of a Mercedes, with the number plates "BFL", and Hamzy allegedly fired at least 11 shots from a passing car.

Hamzy claims that, while he did fire his gun at the October 14 shooting, it was in self-defence because he believed that X was going to shoot him.

While the Crown alleges both Mr Ali and X were members of Brothers for Life, they were not targeted because of that.

Crown prosecutor Margaret Cunneen, SC, told the court MA would give evidence that Hamzy said days before the Greenacre shooting that he was "going to go and get" X.

MA would also say that, days earlier, after Mr Ali told him he shot Mr Ali for calling his wife a gold digger and a slut.

MA told the court during his evidence via audio-visual link that Hamzy told him Mr Amoud's shooting was an accident and he was shot by a stray bullet on October 14, 2012.

"He just said ... he pulled up and I think he said something about a gun and started shooting and that was it, he drove off," said MA, in between animated hand gestures and swivelling in his chair.

"He was pretty upset about Yeyha. He had no dispute, no intention you know. He didn't even know Yeyha was there."

MA "rolled" and offered up information to police about the shooting of Mr Ali and Mr Amoud after he was arrested for other offences in 2014.

In a letter MA wrote to the police referring to the details he had, he stated: "It is going to be the ducks nuts for NSW Police."

His charges, including for discharging a firearm and firearm possession, were later no-billed.

MA denied a tattoo with the letters BFE on his forearm was once "BFL".

"It's right here, you see it?" he asked Mr Johnston as he pulled up the sleeve of his hooded jumper.

MA confirmed he had requested the police to pay for the removal of his tattoos in 2014 but he hadn't heard back.

Hamzy's barrister urged the jury to consider MA's evidence very carefully.

He said MA offered information to police months after the shooting when he was taken into custody for other offences.

"He didn't go [to Greenacre] to shoot [X]," Mr Johnston said.

"It is not the case that he had been chasing [X]. In fact there was a meeting arranged to meet there."

The trial before Justice Robert Allan Hulme continues.