Can anyone help me to determine if my RIA 1903, sn 233642 was in a block of of '03's that went to the Marine Corps? Does such a list exist? I bought this '03 from the CMP and it has a Sedgley U.S.M.C. marked barrel dated 9-42. I looked thru the forum and I found that I don't have any USMC "features" like "pipe marks on barrel; no electro-pencil sn on bolt body; no "Hatcher Hole"; an arsenal stippled butt plate not hand stippled. The only things going for this rifle is a low RIA serial numbered receiver and an early dated USMC barrel. Help!!!