I got my Express Magnum in 1990, and it came with what I believe was black oak furniture. I switched that out for a Knoxx Industries collapsable pistol-gripped stock about 13 years ago, and it has the same synthetic Choate forend I put on it around 1995. The Choate fixed-length pistol-gripped stock went to my dad after I swapped it out for the one from Knoxx. I also added a two-round extension and got a 20" IC barrel with rifle sights, which is just the right choke for rifled slugs but still enough choke to control a shot pattern.I have an early 90's 870 Express Magnum I bought new. Yeah, it has the matte finish and plastic stock but that shotgun has been a stone cold killer on all manner of birds and small game. It's never hiccuped in any way. It's been in duck blinds, goose blinds, dove fields, quail fields and turkey cover. I've contemplated putting some wood furniture on it and I might someday but I keep getting distracted by other projects.
I've put a good number of slugs and 3" buckshot rounds through it over the years, and that smooth action I mentioned lets me run it fast enough to shoot sporting clays (not the ideal but a good enough solution in the absence of a double-barrel). The action will partially open itself under recoil when I fire it, so it's now a semi-recoil-operated pump gun. 😛
Just so no one thinks it's an unsafe weapon, the action stays locked shut and tight before I fire. It doesn't have any head space issues.