Marlin Model 57-M Micro-Groove Barrel 22 WRM

This is a Marlin Model 57-M Micro-Groove Barrel in 22 WRM with a bright excellent bore. This appears to be a 22" replacement barrel marked "The Marlin Firearms Co. North Haven, Conn, USA" with rear sight cut out. The bluing is has storage marks and light scattered oxidation in the sight cut out.