From Destinypedia, the Destiny wiki
Acquired by reaching Reputation Rank 16 with Xûr, the Catalyst adds the following perk:
The form of the weapon suggested an oversized sidearm—a secondary weapon for a giant's hands. The function presented more so as an anti-material rifle. "Looks to be 12.7mm... it's like they were making a hand cannon but didn't know it yet."
The weapon was laced with fractures from a life of fire and a sleep of ice, and perhaps other, more exotic stresses. Banshee wished he could've heard the relic's voice, but he knew from earlier examination that it had fired its last round. What a last round it must have been.
The Guardian who brought it to him might be willing to try a shot, untroubled by the risk of a rapid unplanned dismantle. But Banshee knew it wouldn't last through a single magazine.
It would be an homage, an offering to the creators of the original relic. A legacy.
With that satisfying thought in mind, the gunsmith went to work.
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