Just a couple of facts to clarify. There is a HUGE difference between a 870 Wingmaster, and a 870 "Express". The Wingmaster is superior in every single way you can possible think of, including the component parts each is made of.
The Express Model has:
A plastic trigger group.
The dimples in the mag tube and the new style plastic magazine retention system, EXCEPT on the extended magazine version, which does NOT have the dimples.
A rougher finish inside and outside, with machine marks and some burrs left.
A rougher, bead blasted blue job.
A less polished bore.
A two piece barrel. (not 100% sure about this)
Hardwood or synthetic stock, with a sporting-length fore end and pressed-in checkering.
The Defense version has 18", Cylinder bore barrel, with a bead sight.
Some Metal Injection Molded (MIM, another word for cheap die cast) parts, like the extractor.
Has the locking safety button, although Remington MAY have discontinued it.
The Wingmaster has:
An aluminum trigger group.
The old style magazine retention system.
A much smoother finish inside and out, no machine marks or burrs.
The Wingmaster gun receives a higher level of inspection and finishing.
A fine, commercial polished blue finish.
A polished bore.
A one piece barrel.
Walnut stocks with the famous "Bowling Pin" finish in gloss or satin. and better checkering.
Wide choices in barrel lengths and choke options.
No use of MIM parts, the extractor is milled.
The Wingmaster is the full top-of-the-line commercial Remington pump gun, and is priced accordingly. The Express is a "bottom of the line" budget gun. A Mossberg 500 fits in above an "Express", and below a Wingmaster in quality. I own and shoot both a Wingmaster, (1970's vintage purchased new), and a recient Mossberg 500. I have extensively handled an "Express" and found it's action to be nowhere as smooth as the current production Mossberg 500's, and off the chart poor when compared to a Wingmaster. Remember, we are talking about 3 different guns here. You cannot compare an "Express" to a Wingmaster by saying "It's an 870". You must define which because of the totally different levels of quality involved in the production of each. This little tid bit of fact is neglected to be mentioned far too often. Bill T.