We would like to think Chris at Small Arms Solutions for doing a review. He contacted us a few months back regarding our bolt carrier groups and we sent him one and asked about reviewing an upper which he graciously said yes. We get A LOT OF REQUEST from people who want us to send them an upper so they can review it but upon looking into them we have declined, but we have much respect for Chris and told him to give us the good, the bad and the ugly. Chris is a legitimate subject matter expert on AR-15 including the history of the AR-15 and has written books; hence, why we choose him to critique us and if we can take from him any advise and implement it in the future.