Early MG42 Buttstock release button

[Bigbang]

I have been trying to get a good picture and some clarification on what the release button should look like on and early WWII Bakelite stock. I know it should have concentric rings but I have seen pictures in which the button appears to be flat with a center dot and 2 engraved rings surrounding it. I have also seen a picture of one with a domed button with a center dot and 3 engraved tings surrounding it. Which one is correct or are both or none correct. Any help would be appreciated. Thanks

[42rocker]

Very interesting question.
I'll try to check out a few things on this one.

Later 42rocker

[Bigbang]

Thanks 42Rocker,I would appreciate any information you can give me on this

[Bigbang]

F6CFF807-0638-4E89-8A96-F3882A97D387.jpeg

07F47523-0588-4CC8-B702-43A8CEB1D7E9.jpeg

CAD32513-C56E-4EFD-B761-40CCB2E84231.jpeg

Here are some pictures of the two versions I was referring too. I have seen more of the flat version in pictures of early WWII Bakelite stocks. Comments welcome