Help needed for part

Hi All, I am new to this forum and desperately need help as I have a part missing from my rifle. I have tried the manufacturer and many dealers to get 1 part that is missing after taking down the rifle to carry out a service.

The rifle is a Brocock Concept Elite 5.5mm calibre and the part I need is the magazine advance lever. Now I know that maybe the part is not available, but if there is a kind person out there who owns this gun or a Contour, as the mechanics are the same. Would that person be able to make an outline drawing of this part so that I could make one myself.

I have attached a photo of the side of the rifle where this part is located and in the photo it is the silver coloured flat plate. Please, please, please. can someone help as I want to have this nice rifle working again.

Many Thanks hamousher
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