EXAMINE THIS REPORT ON COLT M16A1 FOR SALE

And for whoever is bickering about barrel markings, the Colt reissue shouldnt have forge codes over the FSB so theres a major seen fuck up suitable there.    The "C" to the barrel would point out a chrome chamber only barrel. But AFAIK, Colt marked the "C" up close to the muzzle on their early barrels, not underneath the handguards. Pic of Front