Infinity Ward has released details that a brand new Gold Knife and a Gold Pistol are coming to Call of Duty: Ghosts on June 3rd on all platforms.
Gold Knife will be available to those who are 5th prestige and higher in Call of Duty: Ghosts. The difference from the Gold Knife and the regular knife is that it has a faster melee time.
Gold PDW Pistol will be available to those who are 10th prestige in Call of Duty: Ghosts. The difference from the regular PDW and the Gold PDW is that the Gold one is fully automatic.