The one I have has a 30" barrel, smooth of course, and came with a base for an aperture rear sight. Has a bead up front. The only 30" model 55 I've ever seen. Has the 2rd detachable magazine and sling swivels on the factory walnut stock w/red pad. Have thought of silver soldering a front ramp and finding an aperture, maybe cut it down for a brush gun for deep woods AK. Very nice old-time bolt shotgun.