Found a Sig 556 Pistol I'm considering buying for a SBR build. I found the 556 Stock along with the button, pins, etc. The question is where/how does one fit the original folding hinge to a pistol or is it possible? Right now it appears it has sort of plate secured x2 allen screws.
Do you have any more pictures? If it's what I'm thinking, that receiver was designed for a buffer tube and stock, but it's hard to tell from that picture.
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