No one seems able to verify that the U. S. Marine Corps ever stamped any of their small arms with "USMC". At least I have never seen any. But I have seen several faked USMC stampings on guns. The U. S. Maritime Commission revolvers apparently had no markings indicating that they were USMC property, and would appear identical to DSC revolvers, which also have no factory-applied property stamps. However, some DSC revolvers may have had property stamps or engravings applied later by defense contractors using them.