A good way to start and what quite a few AR owners have done is order a complete upper from one place and then order a stripped lower, a lower parts kit (lpk), and a stock assembly from other places. You assemble the lower, (not difficult), then attach it to the upper. You gain the knowledge of how the lower goes together and how it works, and you save the 11% federal excise tax imposed on a complete weapon.
"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.