Okay, I've seen this picture posted several places and I decided to try this trick myself.
Just a moment ago, grabbed my m4gery (DPMS lower) and a 30 round mag (empty)
I've tried every different way I can think of to fit it in the mag well wrong. Backwards, upside down, upside down and backwards. It only goes in correctly, or upside down curving forward.
I guess if you're pretty strong and really force it, or you use a big hammer(!), you could get the mag in the well the way she has it.
I'm thinking the picture is not a true reflection of reality...:nuts: