Yep, going to 870 is a big mistake for the following reasons:
1. It's still made so parts are readily available.
2. Newer ones come with Remchokes and we certainly would not want that feature especially using extended ones with gradual taper for steel, HS,....
3. Dual action rails assure that if one breaks the gun will still work. We certainly don't want that if it breaks it should be rendered useless!
4. When one takes the barrel off only the barrel comes off. Now that's too darn easy and the barrels tend to be cheaper. Now that's no go we should all go with that stupid Winchester design where the barrel and mag comes off as one piece that way it's more expensive to buy replacement.
.........