Finally got around to removing the back from my (Nikon F100) film camera, and swapped (almost) all the parts over to a new back. A really fiddly job, in places. This is the old back, along with the catch that broke off - that tiny wee bit of flimsy plastic.

Only bits I didn't manage to swap over, and need to replace, are the bottom hinge pin, and a special piece of foam that presses against the film cannister, with a hole to let you see there's a film in there, and what it is.