COLT M16A1 FOR SALE FUNDAMENTALS EXPLAINED

Wound up with that upper and it's chrome bore barrel down the road.  I feel it's an A1E1 from some nomenclature I saw but not sure as I have in no way viewed Yet another one particular. I figured this was made around the time of solution advancement to your M16A2 ?. I can perform photos  if asked for .... perfectly I attempted, but This page woul