Remington Model  550-1, .22 short, long, long rifle cals. semi-auto rifle.  Serial #NSN.  Good condition.  24" barrel has a very good bore, fixed front sight and leaf style adjustable rear sight.  Mostly a gray gun with a patina finish.  The action works fine.  Smooth wood stock is good with some marks and impressions.  Remington marked black checkered butt plate.  C&R OK.