Braendlin Armoury Lee Speed..?

[Surpmil]

The Braedlin is certainly interesting, but my knowledge of the early actions must be lacking because I have never seen such a square and massive looking butt socket before.

The way in which the left side of the mag cut off lug and the right side of the bolt head retaining spring slot are cut suggests that perhaps these were factory seconds that were going to be sold to some less important client in a remoter part of the world?