I think Mossberg because the Mossberg bolt works perfectly in it. It was branded Ted Williams but as I understand it a few manufacturers made them under that name for Sears.
Ted Williams, yeah, I remember that name now. They had a pump shotgun that had interchangeable parts with the Mossberg as well, so Mossberg might be right on point. I have the Mossberg brand. Very light shotgun for a pump that will hold one in the tube and 5 in the mag. Recoil really isn't that bad despite it's light weight. Good little gun that.