If its a Maruzen 870, yeah, G&P makes metal bodies, google for it. If its a tanaka 870, its already metal. G&P also makes a bunch of grips and accessories for the Maruzen 870, the Tanaka will fit any real steel foregrips, and stocks as long as you visit a hardware store and get the right screw for the stock because tanaka couldnt just make it easy.
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