My 590 is the parkerized model, and is equipped with the ghost ring and post sights, and has a heat shield, which protects the barrel. I have carried this particular 590 in every conceivable weather condition, and except when cleaning it has been loaded since I bought it in early 2000. It has never failed to function or fire. I do not baby this gun, I just keep it clean. The only thing I've done to the gun is to install a thin piece of stainless behind the recoil pad. The recoil pad was being damaged by the speed feed springs, and I wrap electrical tape around the seam to keep moisture out. I have had several bad falls on slippery coastal rocks while carrying this gun, and none of the falls resulted in damage, other than a slightly bent front sight blade. I bought numerous spare parts for this gun, and thus far I have not needed them. This gun has saved my life at least once. I don't think I could ask for more from a pump shotgun.