Two men will be sentenced on Monday for shooting a stranger dead after a row in a queue at McDonald's.
Horace Campbell,28, and Liam Douglas-O'Callaghan, 18, were found guilty of murdering DevonScarlett, 32, in Brixton in April last year.
The Old Bailey heard Campbell and Mr Scarlett were involved in a row at the restaurant.
They were escorted outside by security guards, but the argument carried on and they agreed to meet in a nearby street for a shoot-out.
Campbell called Douglas-O'Callaghan to bring his gun.
He then followed Mr Scarlett down a street and fired three shots, two of them hitting the victim.
Mr Scarlett died a few hours later in hospital.
Campbell and O'Callaghan both denied murder.
– Bobbie Cheema, Prosecutor
"Horace Campbell was determined to avenge the perceived lack of respect that DevonScarlett showed him.
"Devon Scarlett acted with foolish bravado, behaving like a tough guy, but whatever he said and did, he was not armed."