My M1A1 carbine

[RCS]

the stock has the RIA rebuild stamp and I would doubt it is a "hi wood" stock. Early stocks that I have seen had the circle P in the back not side. The pistol grip also has marks
which would indicate early or later too.

Sometimes it is better not to change things and put it back with the adj rear sight and with a bayonet lug. The later bayonet lug often leaves a shadow on the barrel and once
removed is easy to spot