Saw a magazine that some may be interested in. It is expensive (compared to my normal car mag purchases). It is put out by Guns & Ammo, it's titled " Book of the AR-15" . I have enjoyed reading through it.
Let me piggy-back onto this thread and promote my favorite magazine: Combat Handguns. It's expensive unless you get a subscription, but it is a really good magazine with tons of real-world information. I always scan the "table of contents" pages to see if I am interested in that particular issue, and buy it a few times a year. If you have never seen it, try it.....................elsullo