Wills had said that he had no knowledge of items taken from the police department evidence room when in fact he had two guns from the evidence room.
The charges against Wills are in connection with those against Barry Wallace, a former Polk County police officer, who has been charged with knowingly receiving and possessing firearms he knew to be stolen.
Wills had originally been charged with receiving stolen firearms, but that charge was dropped. He is scheduled to be sentenced May 23. He could receive as much as 10 years in prison and a maximum fine of $500,000.