I think it will hold up.
ill put it through its paces some more.
that's why I made this thread to get ideas and input.
The one on the left was a surprise, it looks a LOT like one I'm currently carving out for a pneumag. Yours is a bit deeper fore-aft than the one I'm making,
You think the threaded area and sear pin support will last? If not you could always make room for some inserts.
Most mag rails have that