That is not in the plasticNot to split hairsbutttttt…
The arrow points to polymer injection point at the center of the cover/ cap to produce the clear cover/cap.
I suspect they used a clear cap from a pump spray bottle/container of some consumer product. That being my suspicion, then no, it’s not “everything” as the actual prop…imo.
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If you have ever seen the props used in TOS you would not want them trust me