"As an American, I was not so shocked that Obama was given the Nobel Peace Prize without any accomplishments to his name, but that America gave him the White House based on the same credentials"...Newt Gingrich
The problems we face today are there because the people who work for a living are outnumbered by those who vote for a living.
Yes, sorry, receiver extension is the proper term but usually you hear it called buffer tube. I did spell it out in an earlier post so abbreviated it later.
The biggest issue with assembling an AR isn't so much getting the parts together right - it's getting the right parts together.
US Army 1966-69, VFW Life Member, Retired Geek