In June 1985, Adler joined Guns N' Roses, which was newly founded by Axl Rose, Izzy Stradlin, and L.A. Guns members Tracii Guns, Ole Beich and Rob Gardner. After the original drummer Gardner quit, Adler and Slash joined their former Road Crew bandmate Duff McKagan (who joined in April 1985) to complete the line-up. They played nightclubs—such as the Whisky a Go Go, The Roxy, and The Troubadour—and opened for larger acts throughout 1985 and 1986. After being scouted by several major record labels, the band signed with Geffen Records in March 1986.