Convicted hitman Stephen Asling has been jailed for life with a minimum of 27 years for murdering Graham "The Munster" Kinniburgh in Melbourne.

Asling was found guilty in March of executing Kinniburgh by gunning him down outside his Kew home in 2003 on the late Carl Williams' orders.

Victorian Supreme Court Justice Stephen Kaye on Friday jailed him for life with a minimum 27 years to serve.