I'm thinking about going with a Noveske VLTOR upper http://noveskerifleworks.com/cgi-bi...&cat=138&page=1&search=&since=&status=&title= and a stripped Noveske Gen II lower. I've got a couple questions before I place my orders. I'll need a standard lower parts kit. 1)Who makes the best and where can I order? I'll also need a buffer tube, buffer, A2 stock, action/buffer spring. 2) Who makes the best and where can I order?