Adams, who has scored 17 tries in 33 Tests on the wing, is set to help coach Wayne Pivac's issues in coping with a wave of injuries ahead of the New Zealand game.
British & Irish Lions fullbacks Liam Williams and Leigh Halfpenny are both out with injuries, and New Zealander Johnny McNicholl is only seen as a possible fullback option.
Adams has never played fullback for Wales but played there during his contract with Worcester in English rugby.
He told walesonline.co.uk. that he would be happy to play in the position.
"I would have no problem there if any of the coaches asked me to fill in that role for the time being while there are a few injuries," he said.
"Of course, I would give it my all, like I always do, and I would make sure I try and nail that role as best as I could as if I was playing on the wing.
"It would be a new challenge, which would excite me as well, something different," he said.
Wales haven't beaten the All Blacks since 1953, but that wasn't a concern for Adams.
"With the biggest challenge comes the biggest rewards. Why not think of it like that?
"If you like, we're maybe not at 'full strength', but everyone selected in the coaches' eyes are good enough to be international rugby players.
"What better challenge for someone who hasn't faced one of the big southern hemisphere countries before to face the All Blacks?
"When you get that opportunity – no matter if you've played 150 Tests like Alun [Wyn Jones], or a couple in some boys' cases – against the All Blacks you want to show up," he said.
"That's our mentality. We've got to show up as a team. It's a massive challenge, but I'm buzzing for it and know that energy is going through the whole squad, and we're all looking forward to it.
"It's special, the autumn. It's not often you get the big three over to play – especially with Covid in the last couple of years, we've not played them at all.
"It'll be a massive statement if we can get some victories in this autumn," he said.