Well I finally got my first AR a few days ago.. It is an Armalite m15A2 with 20 inch.. I also picked up a new berreta 92 and my first sks a yugo non issued for $189.00.. As you can tell I have bee busy these last couple of days.. Right now my questions concern the AR.. What do I need to do to break this rifle in, and where can I buy 20rd and 30rd USGI mags.. I already have 6 of those steel 30rd mages marked england.. But I want a place I can just call up and get good usgi 20 and 30rd mag for good price.. Thank you..