The sight bridge has the thin stake mark for the type 1 rear sight. The type 2 sight is round staked in place. The front sight is type 2 marked "SI-B". It appears original to the barrel with the circular stakes around the pin hole.

The type 1A band is marked "KV-B". The RRA stock has a type 2-3 band shadow but the other Winchester stock has a type 1 band shadow.

The barrel is dated 10-43 with ordnance bomb stamp and"IBM CORP" .
As I already stated and posted pics. The trigger group is correct including push button safety "EP-B" and hammer "WMB" and brazed housing marked "BE-B".