Hamilton No. 27, .22 cal. single shot top break rifle.  Serial #NSN.  Fair condition.  15" barrel has a poor dark and pitted bore, fixed front and adjustable rear sights.  Blue finish has turned dark from age and has pitting in the finish.  Replacement hinge screw, missing receiver to stock screws.  Smooth wood forearm and stock are fair with wear and a chip at the top at the steel butt plate.  Appears functional.  C&R OK.