a 590A1 offered with the Mariner style of matte nickle finish? It's an 18.5" gun with bead sight in a local pawn emporium for just under $300 OTD.

It's definitely NOT the otherwise standard 500 Mariner.:)

http://matrix.dumpshock.com/raygun/firearms/shotgun/m590.html

http://matrix.dumpshock.com/raygun/firearms/shotgun/img/mossberg_590a1c.jpg

This one? It's also offered in stainless "Marinecote"

Close. Mossy respond in the affirmative to me.