He was arrested in January after police found him in the store Bancorp in Litchfield, Connecticut.
The 79-year-old pleaded guilty to reckless endangerment, criminal offenses, criminal mischief and unlawful possession of a firearm.
The Men In Black actor were sentenced to two and a half suspended sentence and three years probation.
Conditions of the sentence included a prohibition on the possession of firearm and drugs and alcohol at random.
The prosecution had said was so clever that he was drunk he had left at home and believed that his hat and boots at the door.
Tear A lawyer said the actor thanked no one was injured in the incident, and that he escaped a jail sentence.
The actor - whose real name is Elmore Rual Torn - won an Emmy in 1992 for his role in U.S. comedy The Larry Sanders Show.
In 1984 he was nominated for an Oscar for best supporting actor for his role in Cross Creek, a film about the American author Marjorie Kinnan Raw lings.
