Willie Wise received two life sentences without parole in the shooting deaths at a Tulsa Best Buy.
The sentences will run consecutively.
Wise was found guilty in March of shooting 58-year-old Wesley Brown and 34-year-old Scott Norman in July, 2012, at a midtown Tulsa Best Buy.
Before handing down the sentence, the judge heard witness impact statements.
Norman was the intended victim in what police say was a gang-related killing, while investigators say Brown was a bystander who lost his life while shopping with his daughter.
The defense argued that the actual shooter was Jeremy Foster, who is also charged in the deaths.
When Wise was being escorted out of the courthouse in March, News On 6 asked the convicted murderer if there was anything he wanted to say about the verdict.
He shrugged his shoulders and said, "I ain't got nothing to say. Sorry to the victims though."