Necro'ing this thread...
Aero is gay. Purchased a complete upper + bcg from a not-Aero vendor. Won't cycle properly so I contact Aero, who says ship it back and they'll look it over...until I gave a MA address.
These cocksuckers want me to have it shipped to someone in another state - "Due to a statement from the MA District Attorney, We are no longer shipping to MA. We would prefer not to jeopardize the business as a whole."
I understand not wanting to 'sell' directly, but declining warranty work on a non-regulated part is just f***ed up. Dickholes.