A Guns N' Roses fan is to sue Axl Rose after the singer knocked his teeth out with a microphone.

Darren Wright damaged his two front teeth and injured his mouth after the singer threw his mic into the crowd at the end of the band's set at Australia's Perth Arena on Saturday and has now started legal proceedings to have his dental work paid for, saying it will take months to complete at a cost of $5,000.

"With the bright lights and explosions, I couldn't see anything. The next thing I knew, I was whacked in the mouth. I thought I had been punched. I was quite stunned and it took a few seconds to realize what was going on. I could feel bits of teeth in my mouth. Then someone is climbing through my legs to grab the microphone. I don't think he intended to do it, but it came at me at a fairly flat and hard trajectory. Those cordless microphones are not light. I'm surprised it didn't do more damage. At the very least, I want someone to pay to get my teeth fixed," he said.

Tour promoter Andrew McManus left a message on the fan's mobile phone apologizing for the incident and offering to give him a microphone signed by the "Welcome to the Jungle" hitmaker, but the 39-year-old pest controller has turned down the offer: "In reality I don't think the microphone is going to fix my teeth or pay for the dentist. I'm a father of four on a single income doing it hard in Perth."