Swiss K31, 7.5x55mm Swiss cal. military straight pull bolt action rifle.  Serial #644618, mfg. Switzerland.  Very good condition.  Matching serialized barrel, bolt and magazine. 25" barrel has an excellent bore, adjustable eared front and rear peep sight in place of the standard adjustable rear military sights.  Includes a muzzle cap.  90% blue finish on the barrel and 80% blue finish on the Swiss marked receiver that's beginning to fade from age.  The wood furniture has a Swiss proof and is very good with some hits, wear and impressions.  Has a steel butt plate and leather sling.  Detachable blue magazine is excellent.  Import marked on the receiver.  Long known for their quality and accuracy!  C&R OK.