In article <3156fee6.0@eden.adam.com.au>, boltor@adam.com.au says...

>My daughter has lost the ring that holds down the shutter release >button (and thus also the winder arm) on her FG-20.
>Does anyone know a source, or whether the ring from another Nikon would
>fit? (The ones on my F3 & FM2 don't seem to).

Call 1-800-NIKON US for the number and address of Nikon's parts dept.
(It can be interesting establishing with them just what part you want ,
but they are friendly, and Nikon parts are extremely cheap!)
Hope This Helps