AR lower assembly video
I saw this when I was on the Apex site and thought it might be a good thing to post.
It should help folks like myself that hadn't put one together enough times to be competent doing it right, or help someone that had never done one before. I thought it was quite well done and and simple. It's the best thing I'd happen to see demonstrating the assembly procedure with out a bunch of Bla , Bla, Bla. Hope this helps out.