I bought an assembled upper reciever (just the reciever) for my build from surplusammo.com and have been very satisfied. Granted I don't shoot my gun nearly as much as some other guys on here nor can I speak to the quality of their complete ar's (if they even make assembled ones). But from what I researched prior to the purchase they have a clean record for reliability in their forgings. And I liked the American flag lasered on the top!!