Blurry but the shiny object is the ejector. It floats and when the bolt is pulled back, it hits the bolt release and this moves the ejector ahead flicking out the case.
Problem is, this is too large and when slid back, as shown, the diameter is too large for the action and the bolt will not lock down. The ejector hits the lugs abuttments. Weird but I'm wondering if this is familiar to you guys. This is a brand new action I fitted a Kreiger to last night, never used just sent to me.
I'm calling the supplier, they sell lots of these and are shooters and I think do their own barrel installs.