Hi all, I have a Remington 1903A3 that looks new. I cleaned the cosmoline out of it. Has all Remington parts that look like new. Not even a ding on the stock. Serial # 39346XX. Barrel is dated 12-43. Arsenal rebuild since it has an "OG" stamped on left side of stock. My question is, did Ogden replace all parts or only those that are needed. If I didn't know what "OG" stood for, I would think that this was a brand new rifle. Any thoughts on this matter?