I think this is likely an excellent candidate for restoration IF the barrel hasn't been cut (and I don't believe it has) and the bore is decent, and especially if the stamps on the right side of the butt haven't been sanded off. From what I can see, minimal parts and expense are likely required. Some pretty skilled metalwork would be required. A new upper forearm needs to be spliced in under the mid band, the mid band needs to be replaced or, preferably, the sling swivel and boss restored, the bayonet stud and swivel on the upper band need to be restored and it needs a sight hood and screws. Reproduction mid bands and hoods are available and the presence of the upper band is a major plus. Original upper bands are, without a doubt, the most difficult metal part to find.
OP, please post a photo of the right side face of the butt.