My bank account is now $600 lighter!
http://www.gandrtactical.com/Colt-AR6720-16-Upper-Conversion-Kit-NHG_p_243.html
I ordered a Pennsylvania State Police trade-in AR15A2 lightweight with fixed carry handle, so this will be a good alternate upper for that rifle.
And you ship to a PO Box, too, finally!
:dance3: