Wound up with that upper and It is chrome bore barrel in the future. I believe it's an A1E1 from some nomenclature I observed but unsure as I've hardly ever seen A further just one. I figured this was made across the time of solution improvement to the M16A2 ?. https://colt-combat-elite-defende44566.wikiusnews.com/1091626/rumored_buzz_on_colt_python_6_for_sale