Seen Metallica's Behind the Music? Hetfield says it all.

While playing "Fade to Black", one of the members (I think it was the bass player) messed up and zigged while he should have zagged. He stepped into a pyro pot right before it blew.

Guns started their set, and 45 minutes later, Axl stopped it. Hetfield says that Axl went backstage and started smoking and drinking, and said that he had to stop because his voice was trashed. Hetfield: "So, Guns had a chance to be heroes, and this is what they did. Maybe that's why Guns is history, and Metallica is still selling out every seat."

I like the 2 real Guns albums: Appetite, and the 1 album that they should have made out of both Use your Illusions. Axl is an ass though.