I purchased a stripped lower in the Loki lower group buy. With this being my 1st AR and not knowing anything about how to assemble it, I contacted Matt and he very graciously agreed to help me build my lower. I can't thank him enough. It's one thing to help out a buddy or family member and another to help a complete stranger. Hopefully he has enough patience when I'm ready to do the upper. Excellent guy, thanks again Matt.