I have a 11.5 Bcm mk2 custom build on a Aero Texas edition lower, parts list:
Heres the build info that you requested
Bcm mk2 upper
Dead air flash hider
Bcm charging handle
Bcm fde BCG
Primary Arms Nova 1x6 LPVO w/ mount
Texas edition aero lower
Aero lower parts kit
Larue mbt trigger
Bcm grip and hand stop
Bcm mk2 t2 buffer system
Troy metal backup sights
Sb tactical brace (painted fde)
Asking for $1550 obo