It is believed that the barrels used in these rifles are superior to normal Colt rifles due to them being potentially Cold Hammer Forged instead of button cut. The barrel is “C” marked, and the upper and BCG have the desirable Diemaco forge markings and stampings. Additionally, the stock has red rack numbers and says "PO67" on the left side". This is an AR-15 with a lot of character and would make an excellent addition to your collection. If you do not have any feedback, please contact us before bidding. Also included is one 30 round magazine.