I don't like the Remington bolt assembly... too thin and stamped out, especially after the mid '80s. The Mossberg doesn't look much better, but the parts are much tougher, and it's a better feeding ramp design, with less probability of failure in duress, especially when full of snow or mud. Most of the Mossberg pump action parts are made here in Texas... . where the shotguns are made, along side Maverick shotguns in Eagle Pass, TX. The Mossberg carries a 10 year warranty, the Maverick a 1 yr... ...
The Mossberg's I've had are extremely reliable, even when neglected. One particular 500, my Persuader (#2), has been my room security in every room I've stayed in for the last 9 years. The one before it was given to my wife for home duty, as it's never failed me. It's been on the majority of continents, and a large number of countries. It's a shotgun, so not many people give a it a second thought when you tell them that..... Persuader #2 has been with me non-stop for almost a decade, and killed several hundred, if not over a thousand, hogs, and quite a few coyotes that came in too close or sat there too long. The bluing is beaten and scratched, the aluminum showing on the receiver in places, but it's never failed me when I needed it... .