I've had a couple of guys ask questions about these.
These are ALL Aero parts. Complete upper from Aero with HPT/MPI bcg and MBUS rear. I added the Magpul handguard. Aero lpk and buffer assy with Magpul CTR and MOE grip.
You can get a setup cheaper than this but if you end up with this configuration after buying a Sport 2 or an ORC from anderson, this is going to be the same or cheaper when you factor in shipping, transfer and cost of parts to upgrade.