The awesome Liberator mod from the Fallout Miami team converted to be used with Fallout Joe. If you play Fallout 4, stop what you're doing and go dowload the mod RIGHT NOW. That's the most awesomelly overpowered shotgun ever! There's nothing better than 2 or 3 shooting a deathclaw and watching it explode! I know the fitment on the wrist is not that good, but that's the best I could do keeping the huge stock it have, and also tilting the hand downwards like the game characters hold it.
EDIT: Rotated for the optimal print direction, stock reworked for better positioning.
any PLA, ABS & PETG