It was also mentioned that the bolt shroud should be the early short shroud. Not correct. The M40's used the short shroud of the period. I've not seen a short shroud M40A1.
Lastly, it's hard to tell from the photos, but the metal finish appears to be sprayed on (cerakote?). That would not be USMC finish.
You do realize the M40 actions were used when the Marines upgraded to the M40A1 ???
Yes, the OP’s rifle appears to be baked a on finish, it should be a black oxide finish.
