They don’t seem to be made by Colt anymore, so all the proof codes and inspections marks you would typically see on the barrel, upper, bolt carrier, bolt, and lower parts (particularly the hammer and BHO device) are missing. A2 grips aren’t real either. You can tell an actual Colt pistol grip from all the after-market A2 Vismod grips. I’m not a Colt fanboi, just pointing out hard facts when I’ve looked over these carbines and rifles over the past several years.