A gunman who took police on a high speed chase along one of the borough's busiest roads is facing years behind bars.
Gary Mills, 32, raced an Audi A3 through a rolling road block on the Hanger Lane gyratory system in Acton before chucking his 9mm pistol in a supermarket dustbin.
After outrunning the police pursuit on May 31, 2007, he fled to Spain but was extradited several months later, Southwark Crown Court heard.
Armed police were trailing Mills after they received information that he had bought a gun from a dealer in Walthamstow, east London.
Following his capture he was linked to a violent carjacking ten years earlier, when Mills jumped into a car and tried to snatch a valuable diamond from one of the female passenger's rings.
A single hair from a cap Mills left behind connected him to the attack.
Judge Deborah Taylor warned Mills he was facing a "substantial custodial sentence" and adjourned the case until February 6.
Mills, of Benfleet, Surrey, admitted one count of possessing a firearm with intent to cause fear of violence.
He earlier admitted possessing a prohibited firearm, possessing ammunition without a valid certificate, dangerous driving, perverting the course of justice and attempted robbery.