20 gauge Remington 870 stocks will fit. If you need both front and rear - Ram-Line used to make them. I believe they are now Champion. I got a set years back from Western Gun Parts.
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I seen a set for sale a few weeks back and they were for Post-1981 760’s. Is there a difference between Pre-81 and Post-81 stock fitment?
Post 1981 would be 7600
IIRC .... The 2nd gen 760 stocks will fit the 7600.