I built my own lower, but purchased a complete upper to go with it from PK Firearms. It worked out well for me and I don’t think I would have really saved much by building it myself.
http://www.pkfirearms.com/Daniel_Defense_Custom_Uppers/156/c
I ended up buying some Magpul handguards to replace the standard ones, so did spend a little extra there.
I think the mid length gas system is the way to go for reliability. Daniel Defense makes a good barrel.
“I think the mid length gas system is the way to go for reliability. Daniel Defense makes a good barrel.”
What frog said. He knows.
Oh, I like that site!
Thank you.