The star of movies including "Men in Black" and "The Beastmaster" was arrested in January after police found him inside the Litchfield Bancorp with a loaded revolver.
State's attorney David Shepack says the Emmy Award-winning actor pleaded guilty Tuesday to reckless endangerment, criminal trespass, criminal mischief and the illegal carrying of a firearm.
The 79-year-old actor was given a 2 1/2-year suspended sentence and three years of probation. Conditions include a ban on firearm possession and random drug and alcohol tests.
A defense attorney says Torn is thankful no one was injured and he didn't end up in jail.
Torn won an Emmy in 1996 for his work on "The Larry Sanders Show."