Hey guys, I have been lurking for awhile now reading all the good info on the site and figured maybe I would start contributing. Here is my latest build:
KAC upper and lower
KAC URXII rail
Noveske 12.5" bbl w/ionbond
Magpul miad and CTR
Aimpoint T-1 with ADM mount
Stag LPK
Noveske BCG
AAC brakeout
I purchased the barrel from Noveske and then sent it off to a gentleman who did the dimpling. Neil at Gun Gallery did the assembly of the upper.
As for the receivers themselves, the lower was a part of a special run of stripped lowers from KAC, 1 of 50 or so offered by Trey Knight. The upper came a year later for those who purchased a lower. The rear sight is integrated into the upper. I feel very fortunate to have been able to get the pair and am really happy with the way the build turned out.