Check out the Gun Centre in Kitchener, they did one a month or so ago and I believe are planning on doing more in the near future. It really depends on parts availability,when they can do them.
This is how most of us got started building ARs.
There are tons of video's online.
Had to kill the hot link so copy and paste.
http://www.brownells.com/.aspx/lid=11004/learn/
STATT's for everyone!
I built my AR using vids i found on YouTube they were very helpful.



























