WW2 repair Ordnance Depots in ETO and/or the PTO?

[usgicollector]

I can tell you there were carbines repaired at all levels of maintenance in theater. I am not sure of any markings being applied. Some of the recent CCNL's had articles on carbines with field repair history. As for the rear sights many units in Europe started changing them in the late summer of '44 and had all of the units carbine's sights changed.