mossberg 590a1

Well I have been looking for a deal on a Mossberg 590A1 for a couple of months now. I think I got a pretty good deal from Cabela's today. I got one with theTactical 3 dot sights and a speedfeed stock for $399.00 (reg $449.00) and then when I checked out, it comes with a 50.00 gift card (bought...

Can anyone explain the differences? I plan on getting the A1 anyway, but I'd like to know. Obviously the heatshield in the first pic is a major difference but other than that...? There appear to be some slight cosmetic differences. I think the A1 may have a thicker barrel. Anything else? 590...

so i went down to my local shotgun range today and did some trap and skeet shooting with my mossberg 590A1 , and am very happy with its performance =) besides a couple sideways glances from the older gentlemen of the club who believe that only over unders should be used ;P has any one else...