Andrew Tuohy spotted the ultra-rare HERA Arms H3MAG at the LAN World, Utah gun shop. Right now there are only four species of these H3 magazines in the country. Hera does not even list them on their German website, but LAN World, the distributor of them in the USA, is taking orders from retailers who wish to stock them.
The 30 round magazine is made of a polymer and features a large viewing window along the rear spine to make it easy to check the round count at a glance. The magazine has a angular look to it, which I really like.