A Massachusetts teenager has been sentenced to up to seven years in prison after pleading guilty to manslaughter for using a golf club in a beating that led to another man's death.

Prosecutors say 19-year-old Matthew Riley used a golf club to beat 49-year-old Robert Mackey outside a convenience store in August 2007.

Mackey died of a lacerated spleen about a week later.

Authorities say Riley and his brother got into a dispute with Mackey and another man outside the store in the early morning hours.

Riley was sentenced to five to seven years Friday after pleading guilty to manslaughter, assault and battery with a dangerous weapon and possession of marijuana. Prosecutors had recommended a 10-year sentence.

Riley expressed remorse for the crime.