Found the first video recently on Youtube, and I'm wondering how this dude pulled it off. I mean, it looks like he's modified the magazine shell, but it still has the stock gas chamber and everything else, but I'm wondering if he may not be on to something. The second is one I found a while back, and I'm kinda wondering the same about it (since I have both platforms). Unfortunately I cant read kanji yet, so I have no idea what the description says.
First video:
http://www.youtube.com/embed/Cjw5BMOOW0wAnd the second:
http://www.youtube.com/embed/xr4WXpd4aJI
