It's a custom mag a buddy o mine made from 2 star ak47 mags. He used an epoxy to fuse the two halves together, and then added a layer of flat black to remove the shine. A 5ft you can't see a line or anything, and it gives a pretty good metal appearence. I'm having him make me about 4 more for now, the capacity (about 180bbs),the appearence and the fact it feeds flawlessly made this my new favorite mag.