Springfield didn't use HRA parts in their rifles. Your rifle could possibly be 'new.' My Uncle owns an H & R that gaged at 1 muzzle and 2 throat. The chamber is in the white and the barrel (LMR), sights and gas tube are HRA as is the op rod. The LMR barrel is correct for the serial number range and doesn't have the IH punch mark. Everything else is a mixture of Springfield WWII and post war parts. The only thing I can figure is that they stripped new rifles and threw the parts in bins. They later pulled parts out of the bins and slapped them in rifles further down the line. His was re-arsenalled at RRA, or at least that was what the stock has marked on it. This is an old DCM rifle NOT a CMPicon.