I have a rather ragged looking ariska , think a type 38 , no stamp but anyway. Other than it not being a matching bolt that needs a tlc the barrel unscrews from the receiver . Problem in that when you screw it all the way in the sight is upside down lol . If you back it out enough to be upright it wiggles . This worries me as Im concerned about putting a round in it and the spacing not be right , that is if I can find 6.5 jap rounds . On a better note on of my customers gave me a bayonet that was a bring back and it just happens to be for the ariska and its been sharpened . Any thoughts for the barrel issue ?