A man accused of pulling a gun as O.J. Simpson and others confronted two sports memorabilia dealers in a Las Vegas hotel room told a judge Monday that he will accept a plea deal and testify against Simpson and two other men. Michael McClinton, 49, of Las Vegas, became the third man to agree to plead guilty to reduced charges in the case. He told Justice of the Peace Joe M. Bonaventure he will plead guilty to robbery and conspiracy to commit robbery. He could receive probation or up to 11 years in prison. According to police reports, McClinton brought two guns at Simpson's request to a September 13 confrontation with collectibles dealers Bruce Fromong and Alfred Beardsley. McClinton wielded one gun and acted like a police officer, according to others in the hotel room.