I took a chance and ordered up 3 of these 91/30 stock sets offered at Aim Surplus
for $49 plus shipping.
They are really very nice. No shellac finish like most rearsenalled (sic?) rifles you buy, but original finish.
And your hex or round receivers fit just fine.
There were an assortment of stocks from early war with the brass or metal sling escutcheons pressed into the wood (no screw in pre war escutcheons did I receive) to the no escutcheon versions of late war.
I am happy with mine. No cracks, splits, or other issues whatsoever, all 3 were really very nice.