Chosen Solution
So I’ve looked everywhere and can’t find the part I need, mostly because the aftermarket buttons flood my search. However, I need the plastic piece everything screws to. Not the shell, but the part that houses the trigger springs. I broke one of the little pastiche pieces that hold my spring in place. Any help is appreciated.
You’re probably going to need to buy a boneyard controller to salvage the part you need off it if you want to stay OEM. Otherwise , aftermarket may be the way to go if you can’t find it. eBay should have broken controllers with the parts you need on them that are OEM.