Yes, in a number of versions.
In the Express line, there's the Express 18" synthetic with or without a factory magazine extender.
These are 18" barreled, black synthetic stock, black finish guns with a bead front sight and a Cylinder Bore choke.
There's a new Tactical shotgun series of black finished guns with tactical stocks.
In a more expensive gun, there's the new 870 Magnum Marine XCS.
The standard Magnum Marine has a satin nickel finish, but the new XCS is all black and super durable.
It also has a 18" barrel, black stock, and the super-tough black XCS finish.
Here's a link where you can download Remington's 2007 shotgun catalog showing the commercial 870's:
Look down the page to the listing on which gun catalog to see, NOT the listings on the right side of the page.
http://www.remington.com/products/2007_new_products/
Also, look at the Tactical series on the same listing.
In the top of the line, there's the more expensive Remington 870P Police guns.
These come in a wide range of options including 18" or 20" barrels, with or without extended magazines, bead, rifle, or ghost ring sights, a variety of black stocks some with internal magazines that hold 4 spare rounds, and the Remington R3 super recoil pad.
The Police guns are a little harder to get, and cost more, but are the best pump gun made by far.
http://www.remingtonle.com/
Even the Express guns are a definite step up from the Mossberg or Winchester, and the Police guns are the absolute Cadillac of defense pump guns.