Just got an email from this place where I bought my compliant AR this past year. I am not associated with this place but I thought I would post the link. You Ma. guys know what is compliant or not.
http://www.pistolandpawn.com/promo/dec_10/dec_email_news.html
http://www.pistolandpawn.com/promo/dec_10/dec_email_news.html