"This mags are pretty nice. They are full metal and are a black color. Now I don't know if it is a mag problem or a compatibility problem but they do not feed at all in my G&G M16. Now you may be confused as to why I gave these mags a 4 out of 5 rating but they are a good quality but they just don't feed with my M16. Just beware that even though the description says it is compatible with all of those makers, they might not be."