I purchased a 16" Lightweight upper from them about a month ago. I haven't shot it a lot yet, maybe 100 rounds or so, but I'm very pleased with it so far! Fit and finish are nice, and it's been 100% reliable. I'm not a bench rest shooter, so I can't speak to ultimate accuracy, but it seems on par with my DPMS A2 16".
I debated about exactly what configuration I wanted for quite a while, but as soon as I put it on my lower, and felt how lightweight it was, I knew I made the right choice!