A guy on the Walther forum recently called Walther about Mec-Gar mags when looking for replacements to see if the M-Gar mags were suitable. He asked if Walther mags were made by M-G, and they told him no, they made them in house. Whether this is accurate, I have no idea. I've heard the M-G thing before, rather widely reported, and it's quite possible if they don't now make them, they did at one time. Walther told him no factory mags were available then but would be. Can't remember when this post originated, but the update reporting no mags yet was recent.