Update on Midway's website
Seen where W5USMC has posted a Midway update about these Carbines:
UPDATE 5/19/2021 - While working through the grading process on the M1 Carbines, we now believe these issued carbines were turned back in to the U.S. Government for a functionality Check and Test. Our supplier believes this process would have been done in Europe and would have occurred prior to their transfer to the Italian Armed Forces. As part of the Check and Test process, parts may have been replaced or upgraded. Examples of replaced or upgraded parts could include stocks, bayonet lugs, sights, bolts, safeties or other small parts. In rare cases, barrels may have been replaced, but they appear consistent with wartime production and use. There is no evidence suggesting these guns have been refinished, just brought to a serviceable standard prior to their transfer.
Anyone thinking FN's Overhaul Program 45-46 might have had a hand on these ?