EDIT: Problem solved!
Detail stripped the frame today for cleaning. However, just as I was about to put everything back together, an unknown (to me) part fell out of the frame. Part that fell out was not modified in any way. Could someone please help me identify the part? I only have a vague suspicion as to where it might go. Exploded diagrams and parts lists on CGW and CZC have not revealed anything.
- CZ SP01 (standard version), recent production, 2015 or 2016. Gun is factory/stock, no parts have been changed.
- Not a slide part or magazine part (slide and magazine were removed and put away elsewhere before work began).
- Most likely not part of sear cage as I had taken that completely apart there and didn't see anything like it.
Pictures:
First 3 are different angles/views of the part (apologies photos aren't the best).
Last picture is a size comparison next to the sear cage.