The sear spring (1095)
The swivel (O1)
The tumbler, roughed out (O1)
The mainspring (1095)
The new parts (on the right), hardened, tempered, fitted and finish polished
Here is how the parts relate (approximately) when assembled
The assembled ejector mechanism, ready to be installed on the forend iron, the punch marks on the ejector housing are original.
Here is the finished gun.