BudsGunShop.com - Is it cased and is it traditional gas system?

standard type gas system with a padded hard case "The SA-28 All Purpose Field walnut comes very nicely presented in a well-padded hard case, complete with stock shims and five flush choke tubes. " review randywakeman.com/ReviewMossbergSA28.htm

John, Gas Operated, comes in a Hard Plastic padded case. Light weight and soft shooting shotgun : youtube.com/watch?v=Uuy50fodcqQ

"The gun, which Mossberg imports from Turkey, comes with the barrel removed from the receiver, and each is protected by its own gun sock. These two components are enclosed in a hard-shell case made just for the gun, with a “Mossberg International” emblem on the case. Also included is a snap-shut case with four additional choke tubes (in addition to the one already installed) and a universal choke wrench. These are very nice features that one usually associates with much more expensive guns. In a gun that sells online and in stores for around $500, it’s rare." For a picture go to: outdoorhub.com/reviews/2017/10/26/field-test-pursuing-wisconsin-woodcock-mossbergs-new-sa-28/

standard type gas system with a padded hard case "The SA-28 All Purpose Field walnut comes very nicely presented in a well-padded hard case, complete with stock shims and five flush choke tubes. " review randywakeman.com/ReviewMossbergSA28.htm

John, this gun should come in a padded black plastic hard case. It uses a fairly standard gas system with ports under the barrel actuating pistons to drive the cycling of the gun.