The stock is a NM stock, since it both features the Drawing Number, aswell as a rifle serial number. This is a feature of NM stocks, plus the SA over SPG stock cartouche.

I would look at the barrel in detail - it could possibly also be that someone "killed" a NM rifle, removed the rear sight collar and installed it in this NRA sporter. Isn't the NRA barrel much thicker towards the receiver than the normal M1903 barrel without the rear sight base?