Harrington & Richardson Topper 158, .410 ga. single shot shotgun.  NSN.  Excellent condition.  28” barrel has shiny bore and 95% blue.  3” chamber, choked FULL.   Receiver has very good case color with some light surface rust on right side.  Walnut stock and forearm have very good finish with nice factory recoil pad, some digs at rear of butt.  Action is tight.  A nice bunny and squirrel gun.