Justin King Nalls, the man facing charges for the robbery of the Bucket Bar and Grill in Kewaunee in October of 2014, pleaded guilty to a charge of being a felon in possession of a firearm in federal court proceedings in Green Bay on Wednesday. Nalls faces a minimum of 15 years in prison for the gun charge based on two previous armed robbery convictions, he will be sentenced in September. Nalls and a female accomplice placed ads offering prostitution services online, then robbed at gunpoint those who responded to the advertisements. A search of Nalls’ residence and vehicle yielded a loaded .44 revolver and ammunition for a .357 caliber firearm, both of which are illegal for Nalls or any felon to possess. The Kewaunee County Sheriff’s Department, City of Kewaunee Police Department, and Kewaunee County District Attorney, Wisconsin Department of Justice, Division of Criminal Investigation, and the US Bureau of Alcohol, Tobacco, Firearms, and Explosives investigated the case.