There are at least 3 different lugs that I have seen. Unless they have changed the wood stocked ones, they are actually held onto the stock with 2 wood screws as well as the L shape. The factory synthetic just has a lug in an L shape that recesses into the stock.

wood stocked lug...

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synthetic stocked lug...

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When I got my EDGE, it was inletted for the wood stock lug, so I filled in the recess and milled out a new slot.

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