I think I am the first person to break a 590A1

Boomer said:
Have you guys ever seen the firing pin on a 590? The pin pretty big and is spring loaded; the spring dampens the energy from the hammer. Dry firing didn't break it. It might not be a firing pin issue at all, something might have failed in the trigger group allowing the hammer to follow the bolt. Guns are like any other piece of equipment. They are made to be used, when they fail, and sometimes they do, all you need to do is replace the failed part to get back in business. There is nothing wrong with the 590 design, and it is an easy gun to replace parts on. At least the failure occurred at the range and not in the field.
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I think it was likely that the firing pin didn't temper properly. I've got a 590A1 and it's a shotgun I trust as much as I trust my Glock pistol. Dry fired it about as many times as I've fired it, and it's nearing 500 shells, including 3" magnums, magnum slugs, the odd turkey load, waterfowl heavy shot, and normal target loads. Would take it over an 870 ANY DAY, except as a hunting gun - nothing beats the Wingmaster.
 
I don't know if Mossberg uses MIM made firing pins in their guns or not, but that could be a possibility for breakage and not necessarily because of dry firing it either. Bad injection molding and brittle next to machined tool steel.
 
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