Yup, today a big day for me... my 60th. Retired military in 2016, and lots of time to do good stuff. I had 2K to burn (my birthday present), so what I did? I purchased all parts required to assemble a decent upper in 6mm ARC. Waiting on the scope to arrive sometime this weekend. hoping to learn good stuff from good people. I have a 500 yard open range 15 minutes away so my goal is to bang steal way out there. Good day to all.