Remington 510 Targetmaster, .22 short, long, long rifle cals. single shot bolt action rifle.  Serial #NSN.  Good condition.  25" barrel has a very good bore, fixed front and leaf style adjustable rear sights.  Mostly a gray gun with finished turned patina from age and is coated with light rust.  Smooth wood walnut stock is in very nice shape with some light impressions.  Remington marked black checkered plastic butt plate.  C&R OK.