Check out where to find the Fortbyte #67, available now in Fortnite Season 9! This video guide takes you through the location and condition to earn this Fortbyte piece.
[Edit: July 2nd]
There seems to be a glitch that the rings does not appear upon trying this Fortbyte.
Try double checking that you have the appropriate loadout before the challenge, and repeat the procedure several times for it to appear.