No difference, O.C.. The only difference in 870's is the magazine tube. Those made from 1994-2004 have 2 dimples in them that need to be removed before an extended mag can be used.
Otherwise, all parts from any year 870 can be interchanged.
o.c.kid Welcome to gun and game !!!!! I hope someone comes along and helps you. I would like to hear the response's. I have a 1974 wingmaster and a 1990's express and i don't see any differents in regards to your question between these two I have.
Good Luck and thank you for joining...A.H
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