Early production example of an Underwood contract M1 carbine. Fixed blade front and flip up two leaf rear peep sights, "5-43" dated Underwood barrel, narrow type 1 barrel band, two rivet handguard, blue flat top bolt, and milled trigger guard. With a correct early high wood stock with a boxed "UEF/GHD" inspection cartouche on the right, Marlin "M-U" stamp in the sling recess, and stamped checkered buttplate. With canvas web sling.