Hello Gentlemen!

I would kindly ask You members for some info about the Mossberg 590 A1 Tactical, #51663. I am considering to order that shotgun because it seems to me to be very reliable and sturdy. After some inquiry on YouTube, I learned that the barrels of the 590 A1 are considerably thicker than on standard Mossberg 590s but after checking on the website of Mossberg, I am confused. There one finds twelve different versions of the 590 A1, but only three of them seem to have a "heavy-walled" barrel:

http://www.mossberg.com/category/series/590a1-tactical/

One dealer here is offering the model I want but can`t tell me if the barrel is as thick and sturdy as the military type 590 that is praised on YT.
Now I would like to know if anyone can tell me if the 590 A1 Tactical with the ghost ring sight #51663 has a thicker barrel than the standard 590s or if the barrel is just as thick as the other 590s.
The alternative would be the 590 A1 XS Ghost Ring #51771 but the rear sight seems to me not as sturdy as in the Tactical model #51663.
If any member can help me or has any suggestions I would be very pleased! Many thanks in advance!

Kalunga