Return to Cayde-6 in the Hall of Guardians in the Tower.
"I'll say it because Cayde never will. Gunslingers are elitists. Nothing but the best is good enough for their hands. And firepower isn't enough. They demand elegance, as if there's anything elegant about a gun. If they had their way, Golden Guns would be standard issue. What a universe that would be." —Lord Shaxx