Huss
Member
Looks like John Hermanson can sell you another OM-2 back. But they're not cheap, and you'll have to swap in your current back's pressure plate yourself.
CORRECTION: These are listed as No Longer Available. I'd still write and ask him, John's a great guy.
Alternatively... look for a busted parts-only OM camera for a few bucks. There are plenty out there:
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You're right, way cheaper to just buy a whole OM-2 on ebay than the back from Hermanson!