Jamaar Melton pleaded guilty to 38 felony counts, including armed robbery, assault with a gun, commercial burglary and false imprisonment, and faces up to nearly 30 years in state prison.
Melton was arrested Jan. 5 after robbing a San Francisco Blockbuster Video store on Church Street. Officers recovered his revolver and all the money stolen from the business, according to the district attorney's office.
Police suspected Melton was involved in other robberies and victims from 15 separate stores identified Melton as the suspect.
According to the district attorney's office, clothing found at the Oakland group home where Melton lived matched clothing seen in videos of the robberies. Additionally, investigators located stolen items at the home, the district attorney's office reported.
In one robbery, Melton fired his revolver into the floor near the feet of an employee at a Sprint store on Van Ness Avenue, according to the district attorney's office.
Melton, who has agreed to pay full restitution to all the stores, is scheduled to be sentenced Feb. 19.