Though the bulk of his work on 15 studio albums has been as a member of Guns N' Roses and Velvet Revolver, Duff McKagan hasn't limited himself to those bands. He released a 1993 solo effort, and took part in a series of projects with Neurotic Outsiders, Loaded and Walking Papers, too. McKagan has also worked with Iggy Pop and Sebastian Bach, as well as on solo LPs by various members of GNR. Velvet Underground featured alumni from GNR and Stone Temple Pilots; the Neurotic Outsiders also included members of Guns N' Roses, the Sex Pistols and Duran Duran. McKagan's tours with Kings of Chaos led to collaborations with a string of others, even as McKagan began occasionally sitting in with Guns N' Roses, with whom he recorded five albums between 1987-93.