Board Thread:Naruto Discussions/@comment-26993711-20160205011621/@comment-9782468-20160205195337

Well A is using his own chakra to make his Raiton chakra mode. So I'd say A's base form has the ability to utilize the chakra mode. Since it's just him shooting lightning through himself to make all his processes faster

Just like Sasuke has the Sharingan himself. He isn't like Kakashi, who had his eye implanted. He manifested them himself.

Things like Sage mode, 6psm, and Kurama mode are all outside sources. They don't come from Naruto himself. To clarify on Sage mode, Naruto takes in energy from nature. It's not part of his actual reserve.