I know this company is one that gets a lot of rants as well as a lot of raves. I only have experience with one of their uppers, which I bought as a complete upper. I figured I would upload my personal experience with them onto a youtube video.
Only comment about the actual video itself would be to caution you about having a loaded mag in the rifle with the bolt locked back while inside a structure. Real easy to not be paying 100% attention, drop the bolt and squeeze the trigger before your brain engages.