As part of an art trade. For those who don't know its a reference to Stargate SG-1 http://en.wikipedia.org/wiki/Stargate_SG-1 (the best scifi TV ever!)

Legal stuff:

Yes, this is a rifle magazine that holds 30 rounds, I am currently in possession of it in a state where it is legal. So don't call the BATFE on my ass...

PMAG is copyrighted by MagPul:

http://www.magpul.com/