Not really....I was trying to find out if they had tube extensions to add to the shotshell capacity.
I was wondering if anyone made a tube extension for the 18.5" bbl that brought it out to even with the end of the bbl like in this pic: Pic didn't work. It's the one of the soldier holding a shotgun pointed from what looks to be a vehicle opening on the same page as your link.
O.F. Mossberg & Sons, Inc. - Firearms, Shotguns, Rifles, Accessories, and Precision Machining
Obviously, the above shotgun has no tube extension....it's just made with the tube equal to the bbl....but I have a distinct suspicion that the example above is actually a shorter than 18.5" bbl (probably 16" or so) and is specifically for Mil/LE use unless you get a SBR type tax stamp....something I don't want to go through for a shotgun.
Sean
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