Hi, I have (2) 40 Cal 30 round mags. I don't know who is the manufacturer. Maybe you can. That is why I posted all those pictures. Hopefully you can identify it. At $12 each, it is a good deal. I don't think they work on Sigs, but they are very similar to Sig magazines. I have a Sig P229. Let me know if you are interested. I am located downtown Portland. Pick it here at my office. Send me a PM if interested. I can do some trading too. I would like a leather holster for my S&W Model 10 2" (K frame), mags for my LCP.