At the time the model 1917 and the m-1 carbine were made there was no civilian version of the same therefore no need to mark them US property. You will note that the 1911 and 1911A1 were so marked because there was a civilian equivalent manufactured by Colt therefore not all of these pistols were government property. The Savage Enfileds are marked US property because they were manufactured under ther terms of the lend lease act. The very first Savage Enfelds were No. 4 MkI not MkI* models and were direct purchase and not marked US property.