The build process was straight forward.

The CMMG lpk was packaged into color coded bags. I never got the instructions figured out, and I knew what went where, so I just started assembling the lower. The only trickey part is when it comes to screwing on the buffer tube and keeping the end plate away from the rear take down detent spring. If you're not entirely sure of how that part goes, you WILL find out the sound that spring makes when it shoots across a room. (It sounds like, "Fffffffuuuuuuuuuuuu..............!!!!!!!!!")