Late War Inland Carbine - from Philippines?

[jjspearson]

Bob,
There is no marking at all that I can see on the stock. There is no SA where you have indicated for sure. I removed the butt plate and there could be a very faint "EI" in the wood under the plate, but not sure. The mag catch is not an M2. There is and "M" on the catch, but no line underneath and no nub.