While at the local gunshow yesterday, I saw a few Mossbergs that were tagged model 590 military version. If they were the military version, shouldn't they have been marked as 590A1 model? It's seems like there's always so much confusion when it comes to all the different models of mossy's. I think they were marked in the $380 range. Is there a 590 military model that's different than the 590a1? Any ideas? Thanks.