M1903 handguard expert needed.

[captain_bob_badfish]

This Springfield came from the CMP about 10 years ago. It is one of two I purchased from the original owner a couple of weeks ago whom had never removed them from the boxes since purchasing them. (Whoo-Hoo Me!)

Something about it looked odd right from the beginning on this one but I couldn't put my finger on it... then I realized, there was no hump on the handguard. WTF?
I've never seen one without the hump so I have been trying to research it for the last several days without any luck. I then took it to a local gunsmith whom loves 1903's who kinda freaked out when he saw the handguard. He seems to believe it came from a .30-03.

The handguard is unmarked and in old, but very good condition (no cracks anyway).
Nearly 75,000 rifles were produced with hand guards like this before 1906. Is it possible something like this could survive and resurface during a rebuild or at the CMP?

Does anyone here know what I might have? Perhaps there is a more logical explanation.

Thanks,
Bob