There are also the '92 and '93 (Dutch, Romanian and many commercial) Mannlichers which might look the same since they have basically '88 Commission actions.

One other thing at least specifically with the sporting '88s: the rear trigger guard screw does engage the tang of the action, but the front trigger guard screw does not engage the action body at all. The forward mounting point for the barreled action is a wedge fitted to the underside of the barrel.