Gun parts, real or toy?

[cdsieg]

Detecting east Texas private ranch. I found a piece of a 1922 "The Big Noise cap gun and this other gun part, not sure if it is also from a toy. Please share your thoughts. (This is my first post using my phone I am having problems with figuring multiple photos, I can add more when I get to my pc) TIA

 

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[G.I.B.]

"The Big Noise" is your first clue.

No adult hand would fit in the lever action. Second clue.

Nice dig though...