A jury on Monday convicted a Suffolk man on charges of selling a firearm to a convicted felon, according to a press release from the U.S. Attorney’s Office.

Charlie Keys, 29, sold a loaded semi-automatic handgun to a man he knew was a felon, according to the press release. The man was working as a confidential informant for the Suffolk Police Department and recorded the gun sale on video.

During the sale, Keys fired the gun into the air while standing in his front yard to demonstrate that it worked, the press release stated.

According to court documents, the sale happened Oct. 28, 2016, and involved a Phoenix Arms Model HP22A, a .22 caliber semi-automatic pistol.

Key faces a maximum penalty of five years in prison. His sentencing is set for Nov. 7.