They're going to be friends: Jack White & Kirk Hammett swap signature guitars

It might get loud in the homes of Jack White and Kirk Hammett after the two swapped signature guitars.

In an Instagram post, the "Seven Nation Army" rocker shares that the Metallica shredder sent him one of Gibson's recreations of his beloved 1959 Les Paul Standard aka Greeny. The legendary guitar is named after its original owner, late Fleetwood Mac founder Peter Green, and also belonged to late Thin Lizzy guitarist Gary Moore before making its way to Hammett.

"Guitar slaying maestro Kirk Hammett of Metallica was kind enough to send me one of his new remakes of the famous 'Greeny' guitar the original of which now resides with him," White writes in the caption. "Owned by Peter Green, and Gary Moore, it is well known for its accidental out of phaseness from the neck pickup being upside down and wired 'wrong' etc. You really can hear it up around the 15th fret in my opinion, that's where it sings."

As a thank you, White sent Hammett one of his signature Fender Triplecaster Telecaster guitars, which the "Enter Sandman" metaller poses with in his own Instagram post.

"Thanks so much @officialjackwhite for such a great cool innovative, fun Triplecaster guitar!!" Hammett writes in the caption. "I love it so much Greeny is getting a bit jealous!!!"