Update: I have cooked up the crafting conversions for Ranged Weapon Attachments, and a Narrative Results spending table. I'd appreciate some feedback on it, if any of you have suggestions or critiques.
I'm considering also adding generic options for the different crafting classes (Handling, Reduction, Sight, Internal, and Under-Barrel [the others are too specialized]), but that'll be once I've converted the other types of mods.