Former bikie boss Hassan "Sam" Ibrahim has had time cut from his nine-year jail term for conspiring to supply guns following a successful appeal.
Ibrahim, 53, pleaded guilty to unlawfully supplying prohibited firearms in Sydney and was sentenced in 2018 to nine years in prison with a minimum period of six-and-a-half years.
But the Court of Criminal Appeal on Thursday reduced his term to eight-and-a-half years in prison with a non-parole period of five years and nine months.
Ibrahim, the brother of Kings Cross identity John Ibrahim, was arrested in April 2014 with his sister, Jazz Dior, her partner, Elvis Mileski and former Rose Tattoo drummer Paul DeMarco.
The four were arrested after raids in Sydney and the Illawarra uncovered an M1 military-grade assault rifle, a standard rifle, three pistols, two shotguns and 11 handguns.
In the months prior, Ibrahim planned for Mileski and Dior to obtain five Glock pistols so they could give them to DeMarco, who would, in turn, pass them on to a "buyer" - an undercover police officer.
The Court of Criminal Appeal found Judge Anthony Blackmore had "erred" in finding Ibrahim was "the essential beneficiary" of the conspiracy - saying there had not been enough evidence before the court to prove this beyond a reasonable doubt.
Despite cutting Ibrahim's sentence, Chief Justice Tom Bathurst noted the offence had been a "serious one" and emphasised Ibrahim's "extensive criminal history".
"The illegal supply of weapons the subject of the conspiracy self-evidently constitutes a danger to the community and is an offence which calls for a significant degree of both general and personal deterrence," he said.
"Although it was not open to find that the applicant was the controlling mind or the essential beneficiary, as the applicant was the active planner, organiser and financier, his offence was more serious compared to that of his co-offenders."