It is getting better and better for Guns N’ Roses frontman Axl Rose and AC/DC as another music icon is all praises for the band’s performance with Rose.

KISS bassist/vocalist Gene Simmons has applauded the team up of Rose and the Australian band. “I think it’s great. I think Axl being with AC/DC — best thing that can happen to both bands,” he said in an interview with radio station 105.7 The Eagle in Montana.

AC/DC has invited the Guns N’ Roses rockstar to fill in for Brian Johnson after he took time off because of hearing loss.

Blabbermouth wrote that AC/DC bassist Cliff Williams recently revealed that he will retire from recording and performing after they finish the band’s current  Rock or Bust” tour.

In 2014, co-founder and guitarist Malcolm Young left AC/DC after he was diagnosed with dementia. Meanwhile, drummer Phil Rudd was sentenced to house arrest last year after he was found guilty on a drug charge.

If Williams left the band, Angus Young will be the only one remaining member from the lineup that recorded the classic albums Highway To Hell, Back In Black and For Those About To Rock…We Salute You.

Meawhile, Guns N’ Roses was detained at the Canadian border recently for having a gun on board.

Axl Rose made the revelation during the band’s sold-out concert at Toronto’s Rogers Centre over the weekend. Rose said the customs officers were very nice and understanding, but also stressed that the gun was not his.

According to Billboard, a GNR representative confirmed Axl Rose’s story and said it happened last Friday when they were crossing the border from their stop in Philadelphia. The band’s rep added that the gun did not belong to any member of Guns N’ Roses.

The band recently reunited with its long-estranged drummer Steve Adler after more than 25 years. He was fired in 1990 due to drug abuse.

Guns N’ Roses is currently on their Not In This Lifetime tour. Once it concludes on August 22 in San Diego at Qualcomm Stadium, Rose will join AC/DC once again for the continuation of the Rock or Bust tour.