OP did mention that grand dad was in the marines, they went from 1903 straight to M1 and M1 carbines, that I know of there were very few 03A3s that went to the south pac theatre. the few that did find their way into the hands of GI went with Army to Europe and Africa.
ignore my complete lack of capitalization. I still have no problem correcting your grammar.
I never said half the stuff people said I did-Albert Einstein
You can't believe everything you read on the internet-Benjamin Franklin