I have a stainless Mossberg 500A marine with an 18.5" barrel, and I pack it around on my quad in a soft case via a pair of fin-grip mounts. It regularly gets soaked by rain, knocked by trees, and generally gets banged around, and I've never had a problem with it. Very reliable. I actually like the pump action better than the action on my Remington 870, and the metallic ring from the stainless heat shield sounds cool too. Anyways, as long as everything is functioning, you can't go wrong with a Mossberg.