Factory installed barrels in this serial number range will be commercial manufacture but machined by Hillside Manufacturing (Dallas, PA) using Wilson Arms blanks. does not have USGI chromium plated barrels for assembly of complete rifles.
Based on this output, the highest receiver serial number while Springfield Armory, Inc. During July and August 1974, Valley Ordnance was completing 75 receivers per week. in Texas was sold around Novemto Bob Reese in Illinois. resumed receiver production on Septemat serial number 003701.
Serial numbers after this have noticeably less steel cut away in the bolt raceways after of the cartridge clip guide.