I’ve been collecting the parts to make The Experimental Rifle and went to Scarlet’s Secret Lair as instructed, however the item I was looking for is no where to be found.
If it is in any of the chests that are in that room, could be an issues as the content to open them doesn’t exist anymore. Alternatively, the part is acquired from the remains of the marionette, in which case it is bugged as interacting with it does nothing.
Sorry if this has been posted before, I did have a look, but may have missed it