So I have a Stag lower w/ KNS anti-rotational pins and A2 stock that I want to put a 20" upper on for that M16 look. These are my choices i've decided on. Stag 4H Post ban, 20" Chrome Moly 1/9 Twist, detachable handle - $530 shipped in stock OR Rock River Arms Standard A4 20" upper Post Ban (lower one in photo but w/o stainless barrel), Chrome lined 1/9 twist - $555 plus shipping The RRA is probably going to be a longer wait and i'll have to buy a carry handle as well, while the Stag is in stock and can be had probably within a week. The 20" AR would be more of a range rifle. I have a 16" Stag lefty for SHTF if needed. What say you! I know CL is longer lasting and easier to clean. I do clean my rifles after every range trip. Buying the Stag upper would put me at $780 for the complete build. Also will be picking up a CMMG .22 conversion for either as well.