A man has been found guilty of supplying a gun to Mark Duggan, who was shot dead by police.
Mr Duggan, 29, was shot by officers in Tottenham, north London, on 4 August 2011 and a gun was found nearby, Snaresbrook Crown Court heard.
Kevin Hutchinson-Foster, 30, had denied selling or transferring a prohibited firearm to Mr Duggan.
Mr Duggan's death sparked riots in Tottenham, which led to disorder in a number of English cities and towns.
During the trial the jury heard Mr Duggan collected the BBM Bruni Model 92 handgun just 15 minutes before he was killed.
Armed police, who gave evidence anonymously, described how they had opened fire on Mr Duggan on Ferry Lane because they saw him get out of a taxi holding a loaded gun.
The officer responsible for the two shots that fatally wounded Mr Duggan said: "I had an honest-held belief that Mark Duggan was going to shoot me or one of my colleagues, so I brought my MP5 (sub-machine gun) up to the shooting position."
The officer, known only as V53, shot Mr Duggan in the chest and arm.
He told the jury: "Mark Duggan then fell to the floor. I then closed the suspect down."
The court heard that Mr Duggan had been under police surveillance before the shooting.