South Windsor man Brendan Vollmost, allegedly murdered by four so-called Blood Brothers, traded the drug ice for a shotgun to protect himself from the group, a jury has been told.
Jamie Michael Tilley, 36, and Jack Davies, William Patrick Thomas and Mitchell James Bentley, all aged 27, have pleaded not guilty to kidnapping and murdering Vollmost, 23, at South Windsor in March 2015.
Giving evidence at the NSW Supreme Court on Friday, Ronald Byrnes said before his disappearance, Mr Vollmost told him a shotgun in his shed was to protect him from the Blood Brothers.
On Thursday, Bentley's lawyer James Travallion told the jury there was no dispute his client was one of the four men on the CCTV footage, but it was disputed there was any intention to kidnap, kill or inflict serious injury on Mr Vollmost.
"The defence case is that once Mr Vollmost was in the back shed, Mr Vollmost armed himself with a firearm and directed that firearm at the accused Davies," he said.
"The accused Bentley, on seeing this, struck Mr Vollmost, knocking him to the ground.
"The defence case is that everything that was done after that in the shed by Mr Bentley and by Mr Davies was done in self-defence and in defence of each other."
Philip Young SC, for Davies, said any violence that took place in the shed occurred directly as a result of conduct by Mr Vollmost and his friend Ronald Byrnes.