I have always understood the Scar 17 mags to be steel, but is there any chance they are aluminum? On Saturday when i was out shooting I noticed that the mag that shipped with my rifle had about a 1" stress crack on the back side right where the follower sits when unloaded. By the numbers stamped into the mag, it looks like it was made 06/11 and it is not one of the actual FN mags (i can’t remember the name of the company that makes them for FN, but anyways) After seeing how easy the mag cracked, it made me wonder if these are still being made out of steel... my FNAR mags are without a doubt steel and they seem to be quite a bit heavier and have a very different finish. I could just bust out a magnet, but some steel is non magnetic if im not mistaken. I was just wondering if anyone happens to know. Oh and a side note, FN is sending me a shipping label to send the mag to them. I will let you know how long it takes before i have a new one in my hands.. Still not sure what caused the stress crack, i will see if i can put some pics up later...