ARC Raiders' most valuable loot is blueprints, which are shockingly rare as random drops, but you can get quite a few from quest progression as well.
The Burletta blueprint will allow you to craft the pistol whenever you have the supplies and the need for it, so this quest is definitely worth doing. Here's where to find Tian Wen's weapon cache in Buried City for the Industrial Espionage quest to get your own blueprint.
