A Roxbury man has been sentenced to 10 years in state prison for his arrest with a high-capacity firearm in the aftermath of a Dorchester shooting two years ago, Suffolk County District Attorney Daniel F. Conley said.

A Suffolk Superior Court jury on Friday convicted MARVIN D. MINOR, Jr. (D.O.B. 5/28/83), of unlawful possession of a firearm, unlawful possession of ammunition, unlawful possession of a high-capacity weapon, and receiving a firearm with an obliterated serial number. At a second proceeding, Judge Marita Hopkins found Minor to be an armed career criminal based on his 2001 conviction for a non-fatal stabbing and a 2002 conviction for distributing crack cocaine.

In addition to those offenses, Minor also served four years for possessing another unregistered firearm. He was convicted of that offense in 2003 and had been out for only a few months before being arrested on his most recent charge.

“An extremely dangerous man is off the street today,” Conley said. “He’s off the street because Suffolk gang prosecutors recognized his danger to society, because Boston Police responded rapidly and professionally to multiple calls that morning two years ago, and because 12 jurors saw the facts and applied the law.”

Assistant District Attorney Joseph Janezic, deputy chief of Conley’s Gang Unit, proved during the five-day trial that Minor had custody, control, and knowledge of the TEC-9 semiautomatic firearm that was found in the trunk of his father’s Oldsmobile on the morning of May 8, 2008, and that it was loaded with 11 rounds of ammunition in a magazine that could fit as many as 30 rounds.

Minor was behind the wheel of the Oldsmobile when it was stopped and searched by Boston Police investigating a shooting on Humphreys Street just minutes earlier. Minor’s gun was not the firearm used in the shooting.

Minor was represented at trial by attorney Timothy Bradl.