IBM I-Cut Higwood

IBM #3660xxx Highwood I-cut very early production. IBM 9-43 flaming bomb barrel, Machined N front sight, Flip peep S rear sight, Type 1 un-marked barrel band, Flaming bomb rear of recoil lug, Cross-cannon .45 ord. wheel on stock, Sling groove RMC with large B, Two rivet shallow cut Handguard JL-B, Trigger Housing BE-B stamped & brazed, Trigger TB, Hammer WMB, Type I sear BI, Push button safety un-marked, Short plain face mag. catch EP-B, Slide AOB thin webb, Flat un-marked bolt, Recoil lug PR-B, Type 1 firing pin BEB, Extractor WB, Type 1 ejector.