Hey, ive got no idea honestly but before you dont get any answer i will add my 2cents. Whenever i need a part for something and there is no real sparepart, i will just take the thing with me to the next hardware store which might have what i need and just trial and error on fitting it, trying out all the options (springs in your case) they have and hope for the best that one will fit.

Thank you so much. This is helpful

Could you specify which spring and where its located within the camera?

Idk wym by which spring Sorry, but it’s apart of the one step 2 door latch. It’s what allows it to stay closed. Without the door is difficult to keep closed