Well, you can always buy the Tamiya M4 turret (alot cheaper) and use that oval loaders hatch. Or, you can contact the group [link=http://www.tankace.org/]A.C.E.[/link] to ask Tiff Williams for one of his T-23 turrets (like I am using on my M4A1E8) that does use the oval loaders hatch.

JAT